An astronomy professor explains what exoplanets are, why he keeps looking for them and how Israel intercepts missiles “in ...

The shot of our planet and the great cosmos beyond offers an eerie sense of scale to our quotidian situations on Earth. Reading time 2 minutes An astronaut recently captured an image of Earth from the ...

There may be a warp in the Kuiper Belt, possibly caused by “Planet Y” — a Mercury-to-Earth-sized world that orbits the sun way beyond the orbit of Neptune. Is there a mysterious “Planet Y” orbiting ...

A mysterious new world may be hiding in the outer reaches of our solar system. According to arecent study published on arXiv by Amir Siraj of Princeton University and colleagues, a previously unknown ...

What if we spend decades building advanced telescopes to search for life on other planets and come up emptyhanded? A recent study exploring what we can learn about life in the universe -- even if we ...

Ammonite was discovered using the Subaru Telescope in Hawaii, with follow-up confirmation from the Canada-France-Hawaii Telescope. Its orbit and size officially qualify it as a distant dwarf planet.

(The Conversation is an independent and nonprofit source of news, analysis and commentary from academic experts.) Morgan Underwood, Rice University (THE CONVERSATION) When astronomers search for ...

Astronomers have long searched for life within a rather narrow ring around a star, the "habitable zone," where a planet should be neither too hot nor too cold for liquid water. A new study argues that ...