Super Massive Black Holes by PHD Comics. Sagittarius A*, the super massive black hole at the center of the Milky Way, has a mass million times the mass of our sun, and a diameter equal to the distance between the sun and Mercury.
The size of our planet.
Traveling Near The Speed Of Light [Infographic] Full impulse
Why haven't we found aliens? (for now)
Why Haven’t We Found Aliens - infographic
our solar system, the sun, arcturus, antares, the milky way and the universe. How does the size of earth stack up.
the big bang theory illustrated Without Sheldon it is still fun. Using Gravity to Peer into the Most Violent Places in the Universe: Collid.
Rains and horizons on different worlds… See Future planetary missions timeline
Here Are 36 Photos That Hardly Anyone Knows About... And They Will Leave You Totally Speechless
A slice of the Fukang meteorite, translucent golden crystals of a mineral called olivine gleamed among a silvery honeycomb of nickel-iron.
vacuum This is, in short, a scientific hypothesis that our universe is actually in a false phase state as part of a larger universe, like if it were a
A Milky Way Band: John P. Gleason, Celestial Images APOD Most bright stars in our Milky Way Galaxy reside in a disk. Since our Sun also resides in this disk, these stars appear to us as a diffuse band that circles the sky.