Every time I see the moon in the sky, it makes me happy. Our natural satellite is so familiar it’s easy to take it for ...

The planet should not have survived the star's red giant phase—which sees a star balloon to more than 100 times its original ...

In the ocean's twilight zone, where the reach of the Sun fades to nothing, an epic migration begins every time night falls. It could also have an outsized effect on our climate.

Every time I see the moon in the sky, it makes me happy. The big picture of the moon’s origin is fairly well established.

Powering the Future” provides an accessible introduction to the science underlying energy sources such as wind power, solar ...

A new study suggests that when our star becomes unstable in 5 billion years or so, Earth may avoid being engulfed by its ...

(Mark Garlick/Science Photo Library/Getty Images) If potted plants always seem to die under your care, you can take solace in ...

A reader (and astronomy expert) gets to grips with this one, pointing out that Earth’s future fate is still uncertain – and ...

The universe is so enormous that even the fastest spacecraft humanity has ever built has barely begun the journey. From our Solar System to distant galaxies and the edge of the observable universe, ...

The Earth is four and a half billion years old, so why they started appearing then is unknown, as is the mechanism to make ...

Think you have what it takes to live in a Mars and moon simulation for a year? NASA may want to select you as a volunteer.