M51: The Whirlpool Galaxy

Sunset on Mars taken May 19. 2005 by the NASA Spirit Rover

The Pinwheel Galaxy - this giant disk of stars, dust and gas is 170,000 light-years across; nearly twice the diameter of the Milky Way. It is estimated to contain at least one trillion stars, approximately 100 billion of which could be like our Sun in terms of temperature and lifetime [6000x4690]

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some of my favourite absolutely SICK facts about the trappist-1 exoplanets: - theyre all very close to one another and to their star, so the length of a year on them varies from 1 to 20 DAYS - since they’re so close, the star appears a lot bigger than our sun from earth, and from one planet you could easily see the rest, some would even appear bigger than the moon from earth. you could literally see the surface of another planet with the naked eye!!! - they’re probably tidally locked to their star like our moon is locked to earth, meaning only one side of a planet ever faces the star, and on the other side it’s always night. the sun never sets or rises on any of the planets - the star is red, so the sunlight is red/orange, meaning if, for example, plants were to grow there, they could be black and that’s just what we know now, imagine how much cool stuff we have yet to discover about the trappist-1 system

This Distant World May Be The First Ringed Planet Discovered Outside Our Solar System

Planet J1407b is 430 light years from Earth and 10-40 times the size of Jupiter. It’s too soon to tell if these truly are rings, but if they are…

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The icy blue wings of Hen 2-437

The patterns and symmetries in space never cease to amaze. Hen 2-437 is a planetary nebula which has spectacularly symmetrical wings. It was first identified in 1946 by Rudolph Minkowski, who later also discovered the famous and equally beautiful M2-9, otherwise known as the Twin Jet Nebula:

Hen 2-437 was added to a catalogue of planetary nebula over two decades later by astronomer and NASA astronaut Karl Gordon Henize. If you’re interested in how planetary nebulae form, go here

Credit: ESA/Hubble & NASA

In this amazing Hubble Space Telescope image, a blue bubble-like nebula surrounds a Wolf–Rayet star WR 31a, located about 30,000 light-years away in the constellation of Carina (The Keel).  Wolf–Rayet stars are the most massive and brightest stars known, and their lifecycle is only a few hundred thousand years — a blink of an eye in cosmic terms.

Image credit: ESA/Hubble & NASA, Acknowledgement: Judy Schmidt

The full rotation of the Moon as seen by NASA’s Lunar Reconnaissance Orbiter

Jupiter’s moon, Callisto.

Bright stars of Sagittarius and the center of our Milky Way Galaxy lie just off the wing of a Boeing 747

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The Spanish Dancer and her supernova by strongmanmike2002 on Flickr.