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Astronomy news. New! Earth-like extrasolar planet found; double helix nebula; supermassive black holes, astronomy articles, astronomy pictures. Updated daily.
Updated: 2 hours 46 min ago
Superflares once per century
Stars similar to the Sun produce a gigantic outburst of radiation on average about once every hundred years per star. Such superflares release more energy than a trillion hydrogen bombs and make all previously recorded solar flares pale in comparison. This estimate is based on an inventory of 56450 sun-like stars. It shows that previous studies have significantly underestimated the eruptive potential of these stars. In data from NASA's space telescope Kepler, superflaring, sun-like stars can be found ten to a hundred times more frequently than previously assumed. The Sun, too, is likely capable of similarly violent eruptions.
A new galaxy, much like our own
Stunning new photographs by a team of astronomers have revealed a newly forming galaxy that looks remarkably similar to a young Milky Way. The extraordinary images give us an unprecedented picture of what our own galaxy might have looked like when it was being born.
A new discovery about the source of the vast energy in cosmic rays
New research suggests that these ultra-high energy rays derive their energy from magnetic turbulence.
NASA's Hubble celebrates decade of tracking outer planets
A NASA Hubble Space Telescope observation program called OPAL (Outer Planet Atmospheres Legacy) obtains long-term baseline observations of Jupiter, Saturn, Uranus, and Neptune in order to understand their atmospheric dynamics and evolution.
Mars' infamous dust storms can engulf the entire planet: A new study examines how
Dust storms on Mars could one day pose dangers to human astronauts, damaging equipment and burying solar panels. New research gets closer to predicting when extreme weather might erupt on the Red Planet.
Black hole debate settled? Stellar-mass black holes found at the heart of the Milky Way's largest star cluster
Could a decades-long debate about the mysterious movements of stars in Omega Centauri, the largest star cluster in the Milky Way, finally be resolved?
Universe expansion study confirms challenge to cosmic theory
New observations from the James Webb Space Telescope suggest that a new feature in the universe -- not a flaw in telescope measurements -- may be behind the decade-long mystery of why the universe is expanding faster today than it did in its infancy billions of years ago.
Astronomers find the smallest asteroids ever detected in the main belt
Astronomers have found a way to spot the smallest, 'decameter,' asteroids within the main asteroid belt. They used their approach to detect more than 100 new asteroids, ranging from the size of a bus to several stadiums wide, which are the smallest asteroids within the main belt detected to date.