Reaching Mars is no simple feat. While the idea of sending humans to the Red Planet is gaining traction, the journey itself ...

Four planets will be widely visible to the naked eye through part of February, but calling them a 'planetary alignment' may not be the full picture.

The system is believed to be traveling at least 1.2 million miles per hour (1.93 million kilometers per hour), according to a ...

NASA shares an iconic image of carbon dioxide ice erupting in geysers when Martian winter turns to spring.

Look about an hour before sunrise on Feb. 1 and find Venus, bright but very low, in the southeast, with much dimmer Mercury to its lower left. Far to Venus’s upper right shines Saturn, and ...

An international team has confirmed the discovery of a super-Earth orbiting in the habitable zone of a nearby sun-like star.

Watch a bright Moon dominate the sky, trace the Winter Hexagon, and continue enjoying the evening parade of planets in the ...

The asteroid warning network is affiliated with the United Nations. Officials activate the IAWN when an asteroid bigger than ...

Scheduled to launch on Feb. 27, NASA's PUNCH mission could revolutionize space weather forecasts, unify the solar corona and ...

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

Mercury is the closest planet to the sun, followed by Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune. Mercury orbits ...

Though the planets are always “aligned,” seeing more than four in the sky is more uncommon. February’s lineup is a chance to ...