Astronomers are testing a quieter way of searching for moons beyond the solar system, using careful measurements of motion rather than changes in ligh.

In the early 1960s, Dutch astronomer Adriaan Blaauw observed stars moving at unusually high speeds moving through the Milky ...

A new comet approaching the sun has caught the attention of astronomers, primarily because of its lineage. It appears to ...

Discover why astronomy and cosmology are the universe's mapmakers. Discover how scientists trace galaxies, the cosmic web, and the large-scale architecture of our entire existence in three dimensions ...

A new discovery suggests the possibility of an exomoon with an unprecedentedly large mass, thousands of times larger than any moon in our Solar System.

The MAPS Comet is expected to reach perihelion in early April, passing only 99,600 miles (160,200 km) above the surface of the sun (photosphere). To survive such a close approach, the comet needs to ...

What do you call an object that has all the characteristics of a moon, but whose mass compares to that of a giant planet? The ...

Astronomers have strengthened long-standing predictions that massive runaway stars could have originated in binary pairs, and were dramatically ejected into space when their companion stars underwent ...

NASA has announced the discovery of an Earth-like planet orbiting a Sun-like star that shares several other similarities with ...

The presence of Jupiter is crucial to the architecture of the Solar system and models underline this to be a generic feature of planetary systems. We find the detection of the difference between the ...

Passing stars can perturb the Oort Cloud, triggering comet showers and potentially extinction events on Earth. We combine velocity measurements for the recently discovered, nearby, low- mass binary ...

An asteroid alert rarely starts with certainty. It begins with a faint point of light and a short run of observations, so ...