Ever since the dawn of the Space Age, humans have been obsessed with boundaries—between planets, between galaxies, and perhaps most importantly, between Earth and Space. Where does our atmosphere end ...

It includes all of space ... close to Earth or the other planets. They are both "leftovers" from when our solar system formed. But there are a few notable differences between these two objects ...

You just have to be in the right place at the right time. A solar eclipse occurs when the moon is positioned between Earth and the sun and casts a shadow over Earth. Solar eclipses only occur ...

Venus will pass between the Earth and sun during what’s called an inferior conjunction. But don’t plan on seeing the linkup.

The Earth, Planetary, and Space Sciences Institute (EPSSI ... Researchers in this lab have developed a turbulent cloud chamber to study the interactions between particles and turbulent flows. The ...