The universe used to be filled with a hydrogen fog, before early stars and galaxies burned through the haze. Astronomers are studying galaxies that tell them about this period in the early universe.
One of the few examples of a fast radio burst and the slow-moving, star forming gas in its origin galaxy has been linked together – thanks to observations from a CSIRO telescope.
When two massive objects – like black holes or neutron stars – merge, they warp space and time.
Mark Garlick/Science Photo Library via Getty Images
Artificial intelligence tools are making waves in almost every aspect of life, and astronomy is no different. An astronomer explains the history and future of AI in understanding the universe.
SAURON: radio intensity (purple) from MeerKAT overlaid on an optical image from the Dark Energy Survey.
Michelle Lochner / The Dark Energy Survey Collaboration 2005
While we can’t see inside a black hole, we can spot the intensely bright glowing disc that surrounds one. Now, we might better understand why these discs appear to ‘twinkle’.
The James Webb Space Telescope is providing astronomers with images and data that reveal secrets from the earliest era of the universe.
NASA/STScI
It has been one year since the launch of the James Webb Space Telescope and six months since the first pictures were released. Astronomers are already learning unexpected things about the early universe.
Spiral galaxies like M100, pictured here, may hold answers about the nature of dark matter.
NASA Spitzer Space Telescope/NASA/JPL-Caltech
A comparison of star-forming galaxies suggests, surprisingly, that dark matter and visible matter do interact – taking us closer to understanding what keeps the galaxies together.
James Webb has peered into the distant Universe.
NASA
NASA released five new images from the James Webb Space Telescope, revealing incredible details of ancient galaxies, stars and the presence of water in the atmosphere of a distant planet.
A star forming region in the Milky Way.
NASA, ESA, CSA, and STScI
The mirror on the James Webb Space Telescope is fully aligned and producing incredibly sharp images, like this test image of a star.
NASA/STScI via Flickr
It has taken eight months to test and calibrate all of the instruments and modes of the James Webb Space Telescope. A scientist on the team explains what it took to get Webb up and running.
Some black holes are isolated in space and therefore near impossible to detect.
Some stars travel at high speeds through the universe and sometimes leave spectacular clouds of dust and gas in their wake.
NASA, ESA and R. Sahai (NASA's Jet Propulsion Laboratory)
Hypervelocity stars were discovered only 15 years ago and are the closest things in existence to real shooting stars. They travel at millions of miles per hour, so fast that they can escape from galaxies.