The number of planets that orbit the sun depends on what you mean by “planet,” and that’s not so easy to define ...

This is the last chance to catch the pair in conjunction this year—with Venus set to be unusually bright in the night sky.

Orbital dynamics show that President Trump’s pledge to land astronauts on Mars couldn’t happen until 2029 at the earliest.

NASA astronauts Suni Williams and Butch Wilmore are scheduled to begin U.S. Spacewalk 92 early Jan. 30. Suni Williams and ...

NASA scientists have discovered organic content in the samples recovered from the asteroid Bennu, which points back to the ...

There are 20 amino acids that create the proteins required for life on our planet — and scientists have now found exactly 14 ...

A NASA spacecraft has returned asteroid samples that hold not only the pristine building blocks for life but also the salty ...

There’s been speculation that Donald Trump may cancel the Space Launch System rocket, which Nasa intended to use to get from ...

The new moon of January will be at 7:36 a.m. Eastern Time on Jan. 29, according to the U.S. Naval Observatory, and two days ...

These short electromagnetic pulses resemble birdsong; however, they pose a significant threat to the functioning of ...

These short electromagnetic pulses resemble birdsong. However, they pose a significant threat to the functioning of ...

The recent hype about the planetary alignment of Mercury, Venus, Mars, Jupiter, Saturn, and the Moon is not as rare as ...