Telescopes around the world are now tracking a new visitor to our celestial neighborhood. Streaking through at a speed and trajectory that not even the Sun's immense gravity can capture, we will only ...

Add Yahoo as a preferred source to see more of our stories on Google. Earlier this month astronomers were thrilled to discover only the third known interstellar object ever seen in our solar system.

Astronomers are closing in on one of the most tantalizing possibilities in planetary science, evidence that a previously unknown world may be lurking in the outer reaches of the solar system. The ...

There is a growing buzz in the astronomy community about a new object with a hyperbolic trajectory that is moving toward the inner Solar System. Early on Wednesday, the European Space Agency confirmed ...

Our Sun’s outer atmosphere, the corona, is millions of degrees hotter than it should be, and no one knows why.

Peering through a cosmic keyhole at distant baby star, astronomers may have opened a new window on the deep past of our own solar system. Weighing in at 0.6 solar mass, HOPS-315 should someday grow to ...

At the farthest reach of the Sun’s influence, NASA’s Voyager 1 spacecraft has stumbled into a region that behaves less like empty space and more like a furnace, where charged particles heat to tens of ...

A newly discovered object, dubbed A11pl3Z, appears to be moving too fast and straight to have originated in the solar system. If confirmed, it will be the third interstellar visitor ever spotted. When ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Our solar system has been around for 4.6 billion years. While that sounds like a long time, it's ...

The workings of our solar system are roughly the same now as they have been for millions of years. Moons circle their planets, the planets circle the sun, the sun’s magnetic fields and sunspots wax ...