Russia's state-owned Rosatom announced a prototype plasma engine which could speed up travel to other planets.

NASA is using its human spaceflight experience on the space station to figure out what types of medical events happen in ...

The Sun sets differently on Mars. Part of that is due to its distance from the star (an average of 142 million miles versus ...

For the next few weeks, the planet Mars will form an isosceles triangle with the two bright stars marking the heads of the ...

The four planet-strong "planet parade" currently visible to the naked eye in the night sky for a short time after sunset will ...

Note: no sound] A breathtaking fireball, Alfa Ántlida SPMN150225F, blazed across the Spanish sky at 4:05 a.m. on February 15, ...

Long before digital communication, sweethearts took up pen and paper to profess their affection. This Valentine’s Day let’s ...

Long before digital communication, sweethearts took up pen and paper to profess their affection. This Valentine’s Day let’s ...

In a groundbreaking achievement, NASA successfully sent a laser message from the Psyche spacecraft to Earth, spanning 16 ...

From the daily newsletter: a doctor goes to Mars. Plus: investigating celebrity yearbooks; Merve Emre on friendship books; ...

The space rock is heading in our direction at some 18,700 miles per hour, according to the space agency's data.