This story incorporates reporting from Yahoo, Space on MSN.com and MSN.NASA astronaut Suni Williams set a new record with a ...

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.

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

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 ...

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 ...

Often, the easiest way to understand your birth chart is to get acquainted with your “big three” placements: your sun, moon, ...

Mars, Venus, Jupiter and Saturn should be visible to the naked eye, but get a telescope and you can spot Neptune and Uranus.

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

While Charon is currently listed as a satellite or moon by the International Astronomical Union (IAU), consideration is being given to it perhaps being classified as a dwarf planet in its own right, ...