Artist illustration of an exoplanet.
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Billions of galaxies are in the universe, with billions of stars in every galaxy. Could billions of planets be out there too?
It can stretch your mind to ponder what’s really out there.
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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.
Astronaut Tracy Caldwell Dyson on the International Space Station with a view many more are likely to see soon.
NASA/Tracy Caldwell Dyson/WIkimediaCommons
The first space tourist left Earth 20 years ago aboard a Russian rocket. Now, private companies like Jeff Bezos' Blue Origin are offering trips to the stars for those who can pay.
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.
Space tourism has been slow to get off the ground.
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The first space tourist left Earth 20 years ago aboard a Russian rocket. Now, private companies are on the cusp of offering trips off Earth for those who can pay.
Uncle Segar is an expert on many things including the land, sea and sky. This knowledge is then captured in his artworks.
A planet in a triple-star system has been discovered.
Publicly available data and collaborations between scientists have led to the discovery of a planet in a triple-star system.
Artist impression of KELT-9 b, the orange blob orbiting a blue star.
The hottest exoplanet known so far has metals in its atmosphere – something scientists thought would be impossible.
Thanks to the discovery of five twinkling galaxies in a rare alignment, astronomers have been able to calculate — for the first time — the properties and geometry of an invisible gas cloud in space.
Elliptical galaxies are filled with extremely old stars.
These results might lead us to revise our understanding of how galaxies stop forming their stars.
The Southern African Large Telescope has been a key part of South Africa’s astronomical contributions.
Cape astronomers were responsible for, among other things, the first measurement of the distance to a star; the first photographic sky survey and the accurate measurement of the distance to the sun.
Falling into a black hole is easily the worst way to die.
John M Lund Photography Inc/Getty Images
The scariest beast in the universe has an insatiable appetite and shreds its victims.
ESO/Callingham et al.
Surprising findings on an exquisite and huge star system in our Milky Way suggest future potential for an extremely rare gamma-ray burst. This event has never been observed in our galaxy.
With the proper equipment, you can enjoy the beauty of the night sky.
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COVID-19 may have messed up school and shut down a lot of entertainment venues. But you can still brighten things up by doing a little stargazing at night, an astronomer says.
Towns and cities create an orange glow on the horizon at night. It's so widespread that it even disturbs sea creatures.
Artist’s interpretation of the inside of the Sun.
James Josephides, CAS Swinburne University of Technology
If you could go right into the middle of the Sun, everything would be incredibly bright - and perhaps a little bit pink.
Light trails left in the sky (photographed with a long exposure time), by Starlink satellites, seen from New Mexico, USA.
By 2025 Elon Musk wants to launch 12,000 satellites and corner the global Internet market. What will be lost is earth-based astronomy, the idea that space belongs to us all and the beauty of a starry sky.
Woodcut from Camille Flammarion’s 1888 book
L'Atmosphère : météorologie populaire. The caption reads: ‘A missionary of the Middle Ages tells that he had found the point where the sky and the Earth touch’ and continues, ‘What is there, then, in this blue sky, which certainly exists, and which veils the stars during the day?’
Albert Einstein may have been the ultimate example of a visionary genius, but that did not stop him from twice losing his way due to beliefs that were perhaps not so scientific.
The sun emitting a sudden flash of light—a solar flare.
Has the Sun entered a stage of old age?