Although still difficult to see, 2024's best comet is nearing the Sun and getting brighter. Here's how to see it.

The citizen science app, available in eight languages, uses public input to identify kilonovae, neutron star mergers that ...

In this episode, Dave Eicher describes the upcoming conjunction of two bright objects in the evening sky. On October 5th, you ...

An issue called the final parsec problem detailed the theoretical difficulty in bringing supermassive black holes close ...

An experiment with powerful pulses of energy sent test targets flying in a step forward for planetary defense.

The plumes stretch farther than any yet seen, reaching millions of light-years long and potentially influencing the cosmos ...

On September 22, our satellite passes in front of the famous star cluster M45 in a rare, breathtaking event, producing ...

Royal Observatory Greenwich’s Astronomy Photographer of the Year winners announced including nebulae, skyscapes, and more.

A famous radio signal from space long considered as a possible sign of another civilization, in the end, falls flat.

Neptune reaches opposition today at 8 P.M. EDT in the constellation Pisces. Opposition is generally the best time to view ...

Celebrate a Harvest Moon lunar eclipse and an occultation of the planet Saturn, just days before Neptune reaches opposition.

Our Earth is about 4.5 billion years old and, through careful work, scientists have pieced together a timeline of its past.