The James Webb Space Telescope’s deep field image shows a universe full of sparkling galaxies.
The universe is expanding faster than physicists would expect. To figure out what processes underlie this fast expansion rate, some researchers are first trying to rule out what processes can’t.
Fosalba & Gaztañaga 2021, MNRAS
New deep-space discoveries suggest the Universe is lumpy and lopsided. But if matter is distributed unevenly, we’ll have to rethink the simple geometry used in cosmological models.
ESA/Webb, NASA & CSA, A. Martel
The darkness of the night sky seems so obvious as to need no explanation – yet it has intrigued and baffled scientists for centuries.
It’s the oldest light in the universe.
No one knows what kicked off the Big Bang that eventually allowed the stars to begin forming.
Adolf Schaller for STScI
The term ‘Big Bang’ might make you think of a massive explosion. Put the thought out of your head. Rather than an explosion, it was the start of everything in the universe.
Didier Queloz helped to revolutionise the search for new worlds outside our Solar system.
Andy Rain/AAP Image
The 2019 Nobel Prize in Physics went to a cosmologist who helped unlock the secrets of the Big Bang’s aftermath, and two astronomers who found a “hot Jupiter” orbiting a nearby star.
The Princeton cosmologist helped pioneer our current model of the universe and began a whole new branch of physics.
Artist’s impression of how the first stars in the universe may have looked.
N.R.Fuller, National Science Foundation
New radio technology has managed to detect the first light in the universe.
Gravitational lensing (arcs and streaks in the picture) in the galaxy cluster Abell 370.
Galaxies evolve in mysterious way. But a new study offers a fresh approach to understand them.
Part of the new map of dark matter made from gravitational lensing measurements of 26 million galaxies in the Dark Energy Survey.
Chihway Chang/University of Chicago/DES collaboration
We still can’t see the dark matter thought to make up about a quarter of the universe, but at least now we have a map of its structure.
A change in the density of galaxies can’t explain a cold spot in the sky.
NASA and the European Space Agency. Edited by Noodle snacks
The idea that we live in a ‘multiverse’ made up of an infinite number of parallel universes has long been considered a possibility.
Rich galaxy cluster imaged by Hubble.
NASA, ESA, M.J. Jee and H. Ford (Johns Hopkins University)
Einstein’s famous theory of general relativity theory lives on thanks to new research.
This month marks the 50th anniversary of the discovery of the Cosmic Microwave Background, which is the radiation left over from the birth of the universe.
Move over, multiverse theory.
ESA and the Planck Collaboration
Astronomers have found a giant void in space that explains a mysterious cold spot in the sky. But the search is already on for other voids – and finding them could undermine the discovery.
Some of the antennas of the Murchison Widefield Array radio telescope, designed to uncover what happened in the first billion years of the universe.
More than 100 million years has been wiped off the age of the first stars but there is still the question of what happened in the first billion years of the universe. Earlier this month the European Space…
New data reveals no evidence of gravitational waves in the early universe, as observed by the BICEP2 radio telescope (pictured) near the South Pole.
teffen Richter, Harvard University
One of this century’s greatest potential discoveries concerning the origins of the universe has now fallen to galactic dust. That’s according to a new joint-analysis of all the existing data – including…
Planck telescope and the Cosmic microwave background.
ESA and Planck
In March, scientists working on the BICEP2 experiment, a microwave telescope based at the South Pole, announced that they had seen ‘gravity waves’ from the early universe, created just after the Big Bang…
The universe still holds many secrets.
Recent observations suggest that there is something not quite right with our view of our universe – that something is skewing our view of the oldest radiation arriving at our telescopes. What’s causing…
There’s a lot of dust between us and the edge of the universe.
It’s almost three months since a team of scientists announced it had detected polarised light from the afterglow of the Big Bang. But questions are still being asked about whether cosmic dust may have…
Scary but fascinating.
NASA and M. Weiss (Chandra X -ray Center)
Katherine Mack, astrophysicist at the University of Melbourne, answered questions posed by the public on Reddit. The Conversation has curated the highlights. Dark Matter How do you explain dark matter…