Proponents of going to Mars see peril and opportunity in Elon Musk's close relationship with Trump. Experts say just getting ...

Casey Dreier, chief of space policy at the Planetary Society, highlighted the absence of critical technologies such as life-support systems and infrastructure that are critical for a mission to Mars ...

Six planets are part of the alignment, which will last until Feb. 18. Mercury will join the alignment later in the month.

A Mars image shows a strange square formation. Some think it's artificial, but experts suggest natural causes.

Four of the planets – Mars, Jupiter, Saturn and Venus – will be visible ... The rare parade should be visible until about the ...

An extraordinary astronomical phenomenon will illuminate the sky as stargazers are urged to look up to catch a glimpse of the ...

In a celestial event known as a great alignment the five planets will be discernible with the naked eye, but to see Neptune ...

Four of the planets – Mars, Jupiter, Saturn and Venus ... visible until about the end of February, according to The Planetary Society.