Astronomers this week confirmed the discovery of an interstellar object racing through our Solar System – only the third ever ...

To get a glimpse of the “Swift Planet,” EarthSky suggests waiting for the sun to set before looking west for the planet ...

Adding to the findings of NASA's Mars Science Laboratory Curiosity mission, experts found what initiated a liquid past and how it evolved.

Planetariums were a hit with the public. Within decades, they had spread around the world – the first planetarium in the ...

Folks, it's official: the object that astronomers recently spotted blowing through the outer solar system came from ...

Right now, Earth is about 3.1 million miles farther from the sun than it is in early January when it reaches perihelion, its ...

The Sun, our life-giving star, is slowly dying. In about 5 billion years, it will exhaust its fuel and transform into a red giant, altering the solar system forever. But long before that, the Sun’s ...

Earth has undergone incredible transformations over its 4.5 billion-year history,but what will it look like 1 billion years ...

At the far reaches of our Solar System lies Pluto, a mysterious world shrouded in shadows and icy terrain. NASA’s latest ...

When we gaze into the night sky, we see a tiny fraction of what lies beyond our Solar System. In the vastness of space, our Sun and its planets are but a speck of dust. There are thousands of stars ...

Data from oceans, ice and the air all point to the same thing: rising invisible heat. What experiments are working, and what kinds of trials do we need to stop?

Earth" that is located about 154 light-years away and is nearly twice as big and four times as massive as our planet.