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

It’s not enough to let private enterprise take over the operation. Our government needs to stay ahead of our enemies, provide that global leadership and that pride in accomplishments.

"It's been such a puzzle that there was liquid water on Mars, because Mars is further from the sun, and also, the sun was ...

From mind-bending exhibits to out-of-this-world experiences, science museums ignite curiosity and inspire innovation. Check ...

It is located in a star system less than 20 light-years away, making it one of the closest candidates for further research.