Did you know that the current CO2 concentration in the Earth's atmosphere has peaked in the last million years? A further ...

To tell a Mars rover to turn left or an orbiter to change focus, mission scientists have to beam powerful transmissions ...

Regulus, a distant star, Venus and our moon will be visible during a conjunction tonight, and how Californians can best see it.

Astronomers predict it will pass relatively close to four planets (but not Earth) and the Sun, then continue its cosmic journey. A Harvard professor made headlines theorizing our visitor is a ...

TRAPPIST-1e, 40 light-years away, may have an Earth-like atmosphere, raising hopes for habitability beyond our solar system.

Since astronomers found the first planets outside our solar system in 1992 and the first planet around a sunlike star in 1995 ...

Nasa has discovered over 6,000 exoplanets - planets outside our Solar System and continue to search for Earth-like worlds ...

The moon and Venus will shine vividly alongside a bright star in the early morning in a celestial rendezvous that should be visible across the U.S.

Scientists have found thousands of planets outside our solar system, called exoplanets, throughout the galaxy. This artist’s ...

In a once-a-year event, Saturn is about to reach opposition, with the ringed planet appearing its best and brightest as it ...

The spacecraft will study the heliosphere, a vast bubble created by the Sun's solar wind. This bubble acts like a shield, ...

By 2015, NASA announced that Kepler had discovered its 1,000th exoplanet. 2016 was a banner year for exoplanet detections with nearly 1,500 in that year alone. The total number reached 5,000 in March ...