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

NASA is working on a groundbreaking nuclear electric propulsion system that could dramatically speed up trips to Mars. The ...

Continuing the Artemis program and using its planned lunar space station as a staging post would be a more energy efficient ...

Harvard scientists explain how Mars had warm spells billions of years ago, allowing rivers and lakes to exist.

Our Solar System is a carefully balanced celestial dance held together by a virtually perfect balance of gravity and inertia.

The northern plains of Mars, marked by thousands of mounds and hills, hold significant evidence of the planet's watery past.

The distance between Earth and Mars changes constantly due to their orbits, and the technology used to propel spacecraft plays a significant role in determining travel time. In this article ...

Stargazers will be treated to a dazzling six-planet "alignment" this January.

Venus and Saturn will set about three hours after sunset.Venus and Saturn are currently in conjunction, meaning the planets ...

Six planets are parading across the sky, appearing as some of the night's brightest stars. A few easy tips can help you ...