In a blow to anyone dreaming that complex life may exist elsewhere in the universe, a new study suggests we're unlikely to ...

When my colleagues and I send them out to explore our solar system, it's important for us to understand the 3D map of our ...

Scientists have discovered more than 6,000 planets beyond our solar system. What if some of them aren't planets at all, but ...

There may not be as nearly as many small galaxies in the early universe as astronomers predict there should be, which has big ...

In the bigger picture, "down" could be defined as being below the plane of the solar system, which is known as the ecliptic.

From the deck of a ship or the window of a plane, it feels obvious that “down” points toward Earth and “up” points toward the ...

There are periods when life seems to flow with less resistance for each sign — decisions work out, meetings happen at exactly ...

A professor at the University of California, Santa Cruz, he was a key contributor to a landmark paper that laid out how the ...

We live in a very exciting time: answers to some of the oldest questions humanity has conceived are within our grasp. One of ...

It's not quite clear what the latest Trek series wants to be: a rollicking adventure, a college coming-of-age story, or a ...

A rare triple conjunction of Venus, Mars and Mercury is happening on the opposite side of the solar system to where Earth is, ...

Among other things, the James Webb Space Telescope is designed to get us closer to finding habitable worlds around faraway ...