The tallest mountain in the solar system, Olympus Mons on Mars. It has a height of 25 km, Mount Everest is 'only' 8.8 km tall.

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The Sombrero Galaxy by Hubble

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James Webb Space Telescope may have found the most distant starlight we have ever seen. The reddish blurry blob you see here is how this galaxy looked only 300 million years after the creation of the universe.

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Earth through the rings of Saturn

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The 1.5 km wide Meridiani Planum Crater. The crater is located on the Meridiani Planum plain, 2 degrees south of the Mars equator.

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James Webb took a selfie, as one of the first released pictures.

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Webb and Hubble are working together to help us better understand the universe, in this case they were studying the Cartwheel Galaxy in visible (Hubble) and infrared light (Webb)

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Enceladus, the most reflective body in the solar system and the sixth largest moon of Saturn

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The Tycho supernova remnant by NASA's Chandray Observatory

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Terraformed Venus by @astronomhub on Instagram

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Jupiter in infrared

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The evolution of what we defined as planets, see the comments for more detail.

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Saturn's rings by Cassini-Huygens (NASA & ESA)

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A size comparison of our solar system with: Jupiter, Saturn, Uranus, Neptune, Earth, Venus, Mars, Ganymede, Titan, Mercury, Callisto, Io, The Moon, Europa, Triton, Eris and Pluto. Creates by RL McNish. Note that we now know Pluto is slightly larger than Eris.

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Saturn in UV

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A Juno picture of the rings of Jupiter from the inside.

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The Sombrero Galaxy

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I just found out that my friends don't even know all names of the planets let alone their position in the solar system. This made me real sad because I feel like this should be common knowledge (like knowing what continents we have and were they are). This is why I post this image, credit: NASA

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A towering dust devil casts a serpentine shadow over the Martian surface in this image acquired by the High Resolution Imaging Science Experiment (HiRISE) camera on NASA's Mars Reconnaissance Orbiter.

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Messier 98 (infrared). It is about 44 million light years from Earth and has a mass of 170 billion solar masses.

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Io

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A size comparison of our solar system. 1,000 Jupiter's could fit into the sun, while Earth fits into Jupiter 1,300 times. (Can you see Mercury?)

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The brightest stars in our night sky (excluding our sun)

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The Rosette Nebula by @Astroburns

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Mimas, AKA the Death Star Moon

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The orbits of the inner planet (yellow) and the outer planets and Pluto (green) compared to Sedna's (dwarf planet candidate) orbit (orange)

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Artist's impression of monster galaxy COSMOS AZTEC-1 and real pictures (bottom right) by ALMA. It surprisingly had a massive ordered disk 13 billion years ago. Instead of just one dense cloud of material in the center, there were two extra blobs of star-generating gas.

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Saturn's largest moon was discovered 367 years ago today! Titan is the only place in our solar system known to have liquid rivers, seas and oceans. NASA's Dragonfly mission will visit the moon (in 2036) in order to find if the moon has the potential to harbor life and to map its chemistry.

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The Cat's Eye Nebula with its surroundings

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The US Department of Defense was tracking 20,000 objects in orbit in 2018 (today this number is around 27,000). There is millions of small pieces that are impossible to track so this simulation is by no means complete.

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Jupiter in infrared (International Gemini Observatory)

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The Sunflower Galaxy (Messier 63).

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The Twin Jet Nebula, my personal favorite nebula. It is a bipolar nebula meaning it has 2 central stars rather than 1

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The Horsehead Nebula, probably the best known dark/absorption nebula (this means it is so dense that it blocks the visible wavelenghts from behind it). The nebula has a radius of 3.5 light years and is located 1,375 light years from Earth.

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The Sombrero Galaxy in infrared

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Hubble's very first image (right) compared to a picture by a ground based telescope (left). This image called First Light was used to show Hubble's resolution compared to ground based telescopes.

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Our Solar System by @rami_astro

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The Ring Nebula

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The planets and the sun ranked by density. Saturn is the only planet with a lower density than water (0.997g/cm3) which means it could theoretically float in an ocean.

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Mars in visible light

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Earth viewed from 15° to 145° (centre of the pacific ocean) from Google Earth

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Legendary

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Smaller than a penny, the flower-like rock artifact on the left was imaged by NASA’s Curiosity Mars rover

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Enceladus, Saturn's sixth largest moon. It is the most reflective body in the solar system. (Cassini, NASA)

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Infrared false-color version of the Helix Nebula taken by the Spitzer Space Telescope in 2007

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Triple Eclipse on Jupiter. The moons from left to right: Europa, Ganymede and Callisto

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Super typhoon Trami from space by ESA astronaut Alexander Gerst taken in september 2018.

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Throwback to 2006 when the Cassini spacecraft took a picture from the shadow of Saturn. You can also see Earth on the left side of the image above the bright main rings it appears as a small pale dot.

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The Carina Nebula's pillars also known as the mystic mountain.

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An ice giant with 13 rings, Uranus was discovered 241 years ago today. This image was taken by NASA's ALMA

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The Pinwheel Galaxy by Astrofalls

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The Meat Hook Galaxy

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The first color image of the surface of Venus, taken by the Soviet Venera 13 lander in 1982

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The deeper the V, the harder the D

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The north pole of Jupiter has mesmerizing storms, new Juno images reveal

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The Antennae Galaxies are a pair of interacting galaxies. Collisions of gas and dust and entangled magnetic fields cause rapid star formation, this is known as the starburst phase. They were discovered by William Herschel in 1785.

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No comment

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Hot damn!

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N44 The Reindeer Nebula

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Happy 4th of July to the Americans on here! This is the Fireworks Galaxy (NGC 6946)

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A close up of Saturn by NASA, with the hexagon storm

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Astronomers combined ultraviolet and visible-light images of Saturn to make this picture. The auroral display appears blue because of the glow of ultraviolet light. The aurora would appear red to an observer at Saturn because of the presence of glowing hydrogen in the atmosphere (credit: Hubble)

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Mars with both its moons Phobos and Deimos

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A close-up of the Whirlpool Galaxy (M51)

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Thor's Helmet Nebula

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A bikini at 54 and no one is complaining

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Saturn with its largest moon, Titan. Titan’s surface is sculpted by flowing methane and ethane, which carves river channels and fills great lakes with liquid natural gas. It is the second largest moon in the solar system (after Ganymede) and larger than planet Mercury.

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The Calabash Nebula also known as the Rotten Egg Nebula

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A size comparison between Earth and Jupiter's Great Red Spot (credit: Micharl Carroll)

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The Needle Galaxy, 30-50 million light years from Earth.

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The largest-ever map of 56,000 galaxies, created by the University of Hawaii

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The Fireworks Galaxy, happy new year space lovers!

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Neptune in visible light

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Maintain eye contact

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Formalhaut A with its dust ring by ALMA. It is one of the brightest stars in the sky and part of a triple star system.

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Uranus in visible light

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Uranus’ moon Miranda, whith a mean radius of 236km it is the fifth largest of Uranus’ moons. Nearly everything we know about this moon was learned from the Voyager 2 encounter in 1986. During the flyby the southern hemisphere of the moon was pointed towards the Sun, so only that part was studied.

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The south pole of Jupiter by NASA's Juno spacecraft

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[8] One of the few instances were I didn't know what colour my Pokemon would get after evolving. I am not dissapointed.

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The Winter Nebula by NASA

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Our Sun with a massive solar flare

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They think we'll believe anything

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May The 4th Be With You! This is Mimas, Saturn's Death Star Moon

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Uranus has an image problem

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Kepler supernova remnant by Chandra. First seen in 1604, the supernova was visible during the day with the unaided eye for 3 weeks!

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Planetary allignment of June 27th 2022. All planets that are visible to the naked eye and the moon lined up. This won't happen again untill the year 2040

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AM 0644-741 (sometimes called The Southern Ellipse) is a ring galaxy, approximately 300 million light-years away. Ring galaxies are formed when an intruder galaxy plunges directly through the disk of a target galaxy. Image by Hubble

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Saturn's fifth largest moon, Tethys. It was discovered by Cassini on March 21st 1684. The crater is 450 km across.

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A Spitzer Telescope (NASA) image of the coiled galaxy NGC 1097. The galaxy is located about 50 million light years from our solar system.

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The Ring Nebula by Hubble

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Earth in visible light

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The remnant of Supernova SN 1987A.

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Chinese scientists have created the most detailed map of the Moon yet. It took them 10 years and involved hundreds of researchers. The new map will be a boon to lunar exploration and for anyone who just wants to study our natural satellite in more detail.

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Deimos, the smallest moon of Mars was discovered on this day in 1877

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Uranus in infrared. Image Credit: Lawrence Sromovsky, (Univ. Wisconsin-Madison), Keck Observatory

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Saturn in ultraviolet (UV) light

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Phobos, the largest natural satellite of Mars was discovered 245 years ago today. It was discovered by Assph Hall 6 days after he discovered Deimos, the smallest moon of Mars.

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The planets and Pluto with their average distance from the sun. AU stands for astronomical unit 1 AU is equal to 149,597,871 km (Earth's average distance from the sun)

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Never knew the horizon bended like that

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Ceres was considered to be our solar system's 8th planet before Neptune was discovered. Ceres is a dwarf planet and it is located in the asteroid belt between Mars and Jupiter. It is the smallest of the 5 official dwarf planets of our solar system.

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Mercury in visible light

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Solar System Interactive by NASA. With this you can see real time positions of planets, moons, asteroids and spacecraft in our solar system. You can also view info, compare sizes or simply look at what objects look like (in visible light). Link in the comments

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A size comparison of our solar system by RL McNish. From largest to smallest: Jupiter, Saturn, Uranus, Neptune, Earth, Venus, Mars, Ganymede, Titan, Mercury, Callisto, Io, The Moon, Europa, Triton, Eris and Pluto (note that Pluto is actually slightly larger than Eris)

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Americans after learning a group of fish is called a school

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The Lemon Slice Nebula, a planetary nebula in Camelopardalis. Image Credit: Howard Bond ( Space Telescope Science Institute), Robin Ciardullo (Pennsylvania State University) and NASA/ESA

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Iapetus, the third largest of the more than 60 moons of Saturn, with one side almost totally black and the other white. It is walnut-shaped, with a ridge that is about 15 kilometers high, and 50 kilometers wide . Image by NASA's Cassini spacecraft

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This is the first direct image of an exoplanet (a planet beyond our solar system). The planet orbits a brown dwarf (white in the image). The planet is called 2M1207b, the brown dwarf is called 2M1207A. Credit: ESO

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Uranus has had many names. William Herschel, who discovered the planet named it Georgium Sidus (George's Star) after king George III. The French who disliked the British king named it Herschel. The name Neptune was proposed, but Uranus was chosen since Ouranos was Saturn's father in Greek mythology.

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The first picture of Earth taken by man. The crew of Apollo 8 (Frank Borman, William A. Anders & James A. Lovell) took this while orbiting the moon. A little over half a year before the first man would walk on the surface.

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The Whirlpool Galaxy in infrared, Hubble

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The evolution of what we define as planets. See the comments for more information. (all photo's are by NASA, collage by me).

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Pan, a small moon of Saturn that orbits within its A-ring. It's gravity creates a gap in the ring called the Encke Gap. Out of all named moons of Saturn, Pan's orbit is the closest to the planet.

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The Homunculus Nebula, surrounding Eta Carinae. This UV observation was made by Hubble. Magnesium is shown in blue while nitrogen is shown in red. (credit: NASA/ESA, Hubble)

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Some species of starfish have the ability to regenerate lost arms. A few can regrow a complete new disc from a single arm, which means these species can reproduce asexually.

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This pretty much sums up the entire show

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JUNO Spacecraft's 41st flyby of Jupiter. The spacecraft passedour solar system's largest planet at a distance of 3300 kilometers

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Data from three of NASA's Great Observatories (Chandra, Hubble, Spitzer) were combined to make this image of Cassiopeia A, the remnant of a star that died in a fiery supernova blast.

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The Sun's heliosphere forms a long tail as it pushes its way through the interstellar medium on its journey around the galaxy. The heliosphere shields the Solar System from significant amounts of cosmic ionizing radiation

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Arp 147 is an interacting pair of galaxies, a spiral galaxy (right) and an elliptical galaxy (left), that appear to mark the number 10. It is about 115,000 light-years across and lies some 430 million light-years away in the constellation Cetus.

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The largest moons in our solar system! TLBR: Ganymede, Titan, Callisto, Io, Luna, Europa, Triton, Titania and Rhea. More details in the comments.

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The largest known trans-Neptunian objects.

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Charon, Pluto's largest moon. The twelfth largest satellite in the solar system and the largest satellite compared to its parent body (Image by New Horizons (NASA))

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Andromeda Galaxy, the largest galaxy in our local group. It is on a crash course with the second largest galaxy, the Milky Way. The galaxies will collide 4.5 billion years from now.

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[8] [BDSP] 2 friends and I decided to go for a shiny starter each for our playthrough. I found Turtwig today! and one of my friends has Piplup. Just waiting for Chimchar now! P.s. my friend who got Piplup also found the Starly as a shiny once...

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J0624–6948, scientists think this may be the first ever recorded supernova in intergalactic space. image taken by the ASKAP radio telescope array (credit: Barbel Koribalski)

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Hubble Space Telescope discovers the farthest individual star ever found. The star named Earendel is located approximately 12.9 billion light years from our solar system. credit: NASA, ESA

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An artist's impression of the dwarf planet Haumea and its moons. A day on Haumea only lasts for 3.5 Earth hours, this is what causes its ovalish shape. I hope a Voyager like probe will visit Haumea and the other dwarf planets someday.

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Ceres in visible light

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The moon, Juliter and Saturn from The Netherlands

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The sun with the constellations, because of Earth's axial wobble (precession) the position of our sun in the Zodiac signs changes over time. This means that the Zodiac sign used in astrology have changed over the past 2,000 years. Meaning that your Zodiac sign is probably wrong.

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A computer-generated image representing the locations, but not relative sizes, of space debris as could be seen from high Earth orbit. The two main debris fields are the ring of objects in geosynchronous Earth orbit (GEO) and the cloud of objects in low Earth orbit (LEO).

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A computer-generated image representing the locations, but not relative sizes, of space debris as could be seen from high Earth orbit. The two main debris fields are the ring of objects in geosynchronous Earth orbit (GEO) and the cloud of objects in low Earth orbit (LEO).

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A size comparison of planets, dwarf planets and moons in our solar system

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When someone asks you who your favorite Star Wars character is, eeeuhhmm

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