Stars passing close to the sun could cause planets to collide, including with Earth, or even be ejected as rogue planets, new ...

The reason it’s there, he said, is that objects in the Oort Cloud are far away enough from the sun’s gravity that they ... period comets enter the inner solar system at a range of angles, which the ...

An accidental discovery in an astronomy show offers researchers a new clue about the mysterious Oort Cloud, a large expanse of icy bodies revolving around the sun.

But axions were pushed aside as the WIMPs hypothesis gained more steam. Back-of-the-envelope calculations showed that the ...

One proposed way of examining if such a force could exist is by closely monitoring asteroid trajectories, and few near-Earth ...

Astronomers detect an ultramassive black hole weighing 36 billion suns in the galaxy LRG 3-757, a record thanks to ...

The trajectories of objects often feature anomalies that can be useful in discovering new physics.” These are the words of Yu ...

Is the Hubble constant—a key part of how we measure the expansion of our universe—in a crisis? Some cosmologists say yes.

In 1986, for example, scientists at MIT thought that antigravity could maybe could be a fifth force, and in 2000, another group named the force “quintessence” as a way to explain dark energy.

Life for astronauts in a Martian colony will be extremely similar to the conditions inside today's prisons, according to a ...