The universe has two kinds of matter. There is invisible dark matter, known only because of its gravitational effects on a ...

A collision between our Milky Way galaxy and the neighboring Andromeda galaxy, long considered inevitable, may be in question ...

A team of astronomers have put together the largest, most detailed map of the universe ever created – and you can explore it ...

NASA has shared what people should be looking out for in the night sky throughout the month of June. Spectacular sights from ...

We know of several hundred billion stars in our galaxy, at least 100 billion galaxies, and planets around most of the stars we see. Yet despite the drumbeat of evidence, we still know of just one ...

Right after the big bang, the cosmos were dark and hot; there were no stars, galaxies, and planets. Instead, electrons and protons roamed free, as it was too steamy for them to pair up.

An exoplanet 60 light-years away from Earth, known as 14 Herculis c, is thought to be the coldest one yet found, researchers ...

When astronomers look at distant objects—far away in both space and time—all too often, dust gets in their eyes. Well, not ...

Of all the objects that you can view through a telescope, some of the most stunning to behold are the planets in our solar system, and the galaxies that lie far beyond it. But if you want to see ...

Whether you want to get close to the craters on the moon or observe distant galaxies, you'll need a ... a telescope with a larger diameter for the planets to revolve greater light-gathering ...

Galactic mergers are not like a demolition derby, with stars and planets crashing into each other, but rather a complicated ...