The exoplanet K2-18b might host a water ocean.
Credits: Illustration: NASA, CSA, ESA, J. Olmsted (STScI), Science: N. Madhusudhan (Cambridge University)
The results are intriguing, but analysing the atmospheres of exoplanets is no easy task.
NASA / CSA / ESA / J. Olmsted (STScI) / Science: N. Madhusudhan (Cambridge University)
The James Webb Space Telescope has detected key carbon-bearing molecules on the potential ocean world K2-18b, including tantalising hints of a substance produced by tiny plankton on Earth.
A quasar is a galactic object with a supermassive black hole in the center.
International Gemini Observatory/NOIRLab/NSF/AURA/P. Marenfeld
An astronomer and ‘black hole historian’ explains how the parts of the universe black holes grow in might influence how quickly they become bright, supermassive objects.
Galaxy NGC 6822, neighbouring the Milky Way galaxy, being studied to learn more about stars and dust in the early universe.
(NASA/James Webb Space Telescope)
A new hypothesis suggests that the universe may be twice as old as we had believed. Observations from the James Webb Space Telescope provide new information on the rate of the universe’s expansion.
A phenomenon called gravitational lensing can help astronomers observe faint, hard-to-see galaxies.
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.
NASA’s missions have inspired generations of young people to pursue the sciences.
Both Stephen Alexander’s elementary teachers and televised NASA missions throughout the ‘60s influenced his journey into science. He recounts NASA’s legacy, 65 years after the agency’s inception.
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.
Black holes and other massive objects create ripples in spacetime when they merge.
Victor de Schwanburg/Science Photo Library via Getty Images
Astronomers have for the first time detected the background hum of gravitational waves likely caused by merging black holes.
Euclid is set to launch this year on a rocket built by SpaceX.
Work performed by ATG under contract for ESA
A spacecraft set to launch this year will throw a spotlight on the mysterious ‘dark side’ of the universe.
The far side of the Moon is an attractive place to carry out astronomy.
NASA / Ernie Wright
The current race to the Moon is opening up opportunities for lunar astronomy.
The TOI-700 star system is home to four planets, including two in its habitable zone that could host liquid water.
NASA's Goddard Space Flight Center
With more than 5,000 known exoplanets, astronomers are shifting their focus from discovering additional distant worlds to identifying which are good candidates for further study.
Images of six candidate massive galaxies, seen 500–800 million years after the Big Bang.
NASA / ESA / CSA / I. Labbe
The discovery of massive, early galaxies could force scientists to rethink how the first galaxies formed after the Big Bang.
Discover how a picture of the sky can become a symphony.
Chandra X-ray Observatory
Since ancient times, the stars have been set to music. Modern technology now enables scientists to convert images of space into real compositions.
The James Webb Space Telescope began sending its first images back to Earth in the summer of 2022.
NASA, ESA, CSA, and STScI via Flickr
NASA has been gaining momentum in recent years as investment into space has ramped up in the US. In 2022, missions dealt with the farthest, closest, hottest and coldest conditions in the universe.
The Carina star-forming region imaged by the JWST.
A year on since the historic launch of the most powerful infrared telescope in human history, we admire and explore some of the best images it delivered in 2022.
The James Webb Space Telescope is providing astronomers with images and data that reveal secrets from the earliest era of the universe.
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.
Astronomers have unpacked the mystery of how one star’s death created the nebula NGC3132 – never before seen in such detail.
Artist impression of WASP b and its star.
NASA, ESA, CSA, and J. Olmsted (STScI)
The James Webb space telescope is making the headlines again – this time completing its first chemical inventory of a distant, exotic world.
Astronomers have been looking for radio waves sent by a distant civilization for more than 60 years.
Rytis Bernotas/iStock via Getty Images
The technology of an advanced alien civilization is likely to produce many signs that could be detected across the vastness of space. Two astronomers explain the search for technosignatures.
We should not rule out taking a closer look at exoplanets that have a poorly oxygenated atmosphere.