I don’t want to freak you out, but you should be aware that there’s a gigantic galaxy with twice our…
A particularly dramatic view of comet 67P/C-G due to the angle of solar illumination, this is a mosaic made from…
The Milky Way is our home galaxy, the spot where the Earth resides. We are not anywhere near the center…
You've probably heard the trope about how aliens have been watching old episodes of "I Love Lucy" and might think…
The Pathways Interns of NASA's Johnson Space Center have been working very hard lately with the successful Orion launches. They…
Since there are stars and galaxies in all directions, why is space black? Shouldn't there be a star in every…
Astronomers are pretty sure what happened after the Big Bang, but what came before? What are the leading theories for…
What fate awaits Phobos, one of the moons of Mars? “All these worlds are yours except Europa, attempt no landing…
A star can burn its hydrogen for millions or even billions of years. But when the party's over, black holes…
On April 12, 1961, Soviet cosmonaut Yuri Gagarin entered the "realm of myth and legend" when he became the first…