Galaxy cluster MACS J1149.5+2223 taken with the Hubble Space Telescope. The inset image is the very distant galaxy MACS1149-JD1.
ALMA (ESO/NAOJ/NRAO), NASA/ESA Hubble Space Telescope, W. Zheng (JHU), M. Postman (STScI), the CLASH Team, Hashimoto et al.
Astronomers have indirectly spotted some of the first stars in the universe by making their most distant detection of oxygen in a galaxy that existed just 500m years after the Big Bang.
An artist’s illustration of a black hole “eating” a star.
Astronomers are gathering an exponentially greater amount of data every day – so much that it will take years to uncover all the hidden signals buried in the archives.
The dark band is the Dark Doodad Nebula, a place where new stars and planets can form.
A three-dimensional look and listen at a dark cloud in space sheds new light on the mystery of how our solar system formed billions of years ago.
Artist’s impression of Proxima b, a planet orbiting the star Proxima Centauri within the closest known star system outside of our solar system.
Using AI to search for ET might help us find things we couldn't even imagine we should look for, but to succeed we also have think critically about how we create and use that technology.
Time to peer below the swirling clouds of Jupiter.
NASA/JPL-Caltech/SwRI/MSSS/Kevin M. Gill
Now's a great time to see Jupiter as it's about to be the closest to Earth for some time. Time too to catch up with the latest on the Juno mission, exploring the largest planet in our Solar System.
New heavy nuclei are constantly generated in stars and other astronomical bodies.
People long assumed all the elements we see now were created during the Big Bang. But on May 2, 1952, an astronomer reported spotting new elements coming from an old star and changed our origin story.
Top-down artist depiction of a tiny black hole and a pileup of gas and matter swirling toward the center.
The little-known Rossi X-ray Timing Explorer spacecraft was like a Geiger counter for the universe, listening to black holes and zombie stars.
Neutron star merger.
Credit: NASA's Goddard Space Flight Center/CI Lab
Astronomers are getting ready to say good bye to the radio emission from a neutron star merger – one of the most energetic events in the universe – that was detected last year.
All the proofs in the world won't change a convinced flat earther's mind.
The Vela pulsar makes about 11 complete rotations every second, it also has a glitch.
X-ray: NASA/CXC/Univ of Toronto/M.Durant et al; Optical: DSS/Davide De Martin
Pulsars are rapidly rotating neutron stars and some of them are know to have a "glitch", and astronomers have captured one as it hapened.
Imagined view from Kepler-10b, a planet that orbits one of the 150,000 stars that the Kepler spacecraft is monitoring.
NASA/Kepler Mission/Dana Berry
When NASA first started planning the Kepler mission, no one knew if the universe held any planets outside our solar system. Thousands of exoplanets later, the search enters a new phase as Kepler retires.
The ISS sees us on Earth, but look up at night and you may see it, too.
A couple thousand satellites are orbiting Earth right now. Under the right conditions, your naked eye can spot these human-made objects in the night sky.
Understanding the past requires knowledge that goes beyond modern science.
Harvepino / shutterstock
'Ridge A' sits at the peak of the Antarctic ice sheet and has exceptionally cold, dry, thin and dark skies.
An artist’s rendering of how the first stars in the universe may have looked.
N.R. Fuller, National Science Foundation
Signals from the first stars to form in the universe have been picked up by a table-sized detector in a west Australian desert. The find also hints at an early interaction with dark matter.
Through abstraction, the underlying essence of a mathematical concept can be extracted.
So many stars above an Australian cemetery.
Flickr/Indigo Skies Photography
On a clear night you can see thousands of stars in the night sky, and there are billions more in our galaxy alone. But are the official star names really up for sale?
An artist’s impression of a supermassive black hole at the centre of a galaxy.
Black holes may come in many sizes, but there's still a gap in the middle. The hunt is on to solve the mystery of where are the intermediate size black holes.
An artist’s impression of the predicted merger between our Milky Way (right) and the neighboring Andromeda galaxy (left). So which galaxy will dominate?
NASA; ESA; Z. Levay and R. van der Marel, STScI; T. Hallas; and A. Mellinger
Bigger galaxies tend to dominate the smaller, when the two collide. But the pending battle between our Milky Way and the Andromeda galaxy might be a much fairer fight than we previously thought.
time of moonrise and moonset and the shape of the Moon change throughout the month.
Marcella Cheng/The Conversation
When and where you see the Moon in the daytime depends on what phase it is in.