When most people think of our Solar System, they think of the 8 planets officially recognized by the International Astronomical Union (IAU). But what if I told you there are at least 40 planets, and ...

I/ATLAS might be over 7 billion years old, a new study reports, which would make it the oldest comet known. But experts caution we need more data.

Several planets stand still in the sky, Titan’s shadow transits Saturn, and Venus gives Taurus a second eye in the sky this ...

From asteroids the size of football stadiums to nuclear war and man-made pandemics, it can seem as if humankind is in ...

Dan Weedman was a senior official at NASA and the National Science Foundation from 1992-2002, including serving as the head ...