This image shows Sagittarius A*, the black hole at the center of the Milky Way galaxy.
Sagittarius A* is a massive black hole at the center of the Milky Way. Now that astronomers have imaged it, they can begin to learn more about black holes within other galaxies across the universe.
The Hubble Space Telescope was born from a previous decadal survey. What leaps forward will come from this one?
The astronomy and astrophysics decadal survey for the 2020s lays out plans to search for life on distant planets, understand the formation of galaxies and solve deep mysteries of physics.
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.
An artist’s impression of the Double Pulsar system in which the two pulsars orbit each other every 2.5 hours and send out high-energy beams that sweep across the sky.
Image credit: John Rowe Animations/CSIRO
Astronomers watched a pair of pulsars for 16 years to test the theory of general relativity, which has stood unchallenged for over a century.
New technologies have enabled us to learn more about black holes.
Advanced technologies and the information they collect have revealed how black holes form and behave.
There’s a lot we don’t know about galaxies.
We have to look back to the Big Bang to find out.
The planet Saturn.
Saturn, Jupiter, Neptune and Uranus all have rings.
It can get very cold in space.
A telescope in the outer solar system would be able to do unique science that is impossible closer to the Sun.
Such a mission could be developed soon, allowing astrophysicists to take selfies of the solar system and use the Sun’s gravity as a lens to peer deep into space.
Artist’s rendition of the Jupiter-like planet and its white dwarf star.
W. M. Keck Observatory/Adam Makarenko
In 5 billion years the Sun will collapse. A new discovery suggest some planets may still survive afterwards.
The James Webb Space Telescope is the biggest orbital telescope ever built and is scheduled to be launched into space on Dec. 18, 2021.
The largest orbital telescope ever made will allow astronomers to study the atmospheres of alien planets, learn about how stars form in the Milky Way and peer into the farthest reaches of the universe.
NASA / Tim Pyle
By studying the chemical makeup of binary stars, astronomers found many planetary systems are far less peaceful than ours.
The universe has a finite age — 13.8 billion years to be exact. So if it had a beginning, why is it so difficult to say for sure whether it will have an end?
It can stretch your mind to ponder what’s really out there.
Stijn Dijkstra/EyeEm via Getty Images
Astronomers know a lot about what’s in outer space – and think it’s possible it never ends.
Mysterious blasts of radio waves from across the universe called fast radio bursts are getting more attention from astronomers.
Fast radio bursts are the focus of a young and fascinating field of astronomy. Researchers just released data on more than 500 new bursts, quadrupling the total number of detected events.
A galaxy 320 million light-years away has a surprisingly similar structure to the Milky Way, suggesting our galaxy isn’t as unique as it once seemed to astronomers.
Proxima Centauri is the closest star to the solar system and is home to a potentially habitable planet.
Hubble/European Space Agency/WikimediaCommons
Astronomers just measured the largest flare ever from Proxima Centauri, humanity’s closest neighboring star. These flares could be bad news for life trying to develop on a planet orbiting the star.
A man is arrested during a protest against Hong Kong’s National Security Law in July 2020.
Plus new research finds a way to speed up the search for dark matter. Listen to episode 4 of The Conversation Weekly.
NSF / LIGO / Sonoma State University / A Simonnet
A small add-on to existing gravitational wave detectors could reveal what happens to matter as it becomes a black hole, a process like the big bang in reverse.
Large radio telescope dish in Arecibo national observatory.
The Arecibo radio telescope has collapsed but its amazing discoveries will live on.