Astronomers have detected a long-running source of slow, repeating radio pulses that can’t be explained by current theories – but it’s probably not aliens.
Composite: Chuck Carter / Gregg Hallinan (Caltech) and Philippe Donn (Pexels)
Astronomers have detected the coldest star ever found to emit radio waves using the Australian SKA Pathfinder telescope.
A light, cheap space telescope design would make it possible to put many individual units in space at once.
Katie Yung, Daniel Apai /University of Arizona and AllThingsSpace /SketchFab
Space telescopes are limited in size due to the difficulties and cost of getting into orbit. By revamping an old optical technology, researchers are working on a lightweight and thin telescope design.
On April 8, 2024, much of the eastern United States will fall in the path of a total solar eclipse, like the one pictured.
Diane Miller/The Image Bank via Getty images
Bright, flickering galaxies called quasars were thought to pose a problem for our understanding of the cosmos – but new research shows Einstein was right yet again.
A detail from the astronomical ceiling at the Dendera temple in Egypt.
(kairoinfo4u/flickr)
Some time measurements, like months and years, use the movements of the moon and sun, respectively. But other time measurements, like the hour, aren’t clearly connected to astronomical phenomena.
Black holes and other massive objects create ripples in spacetime when they merge.
Victor de Schwanburg/Science Photo Library via Getty Images
The planet Halla looks like it should have been devoured by its host star, a red giant called Baekdu – but a secret in the star’s past may hold the answer to the planet’s present.
A long-exposure photo reveals the Sun’s path in the sky every day for a six-month period.
Bob Fosbury / Flickr
Our Sun will likely go out quietly – but not all such stars do. A new radio detection of a supernova can help us better understand these cosmic cataclysms.
New research shows that the destructive merging of a star and a planet expels huge amounts of gas, as shown in this artist’s impression.
K. Miller/R. Hurt (Caltech/IPAC)
Stars begin to expand when they run out of fuel and can become thousands of times larger, consuming any planets in the way. For the first time, astronomers have witnessed one such event.