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Scientists finally confirm that solar maximum is well underway — and the worst could still be to come
By Harry Baker published
A surprise announcement from scientists involved in monitoring the solar cycle has finally confirmed that the sun's most active and dangerous phase — solar maximum — is already well underway, and could continue for at least a year.
Are we wrong about the age of the universe? The James Webb telescope is raising big questions.
By Sandro Tacchella published
Some of the earliest galaxies found with JWST are also the brightest. That's a problem for our ideas about the universe.
Gaia space telescope discovers 55 'runaway' careening away from stellar cluster at 80 times the speed of sound
By Robert Lea published
Using the Gaia space telescope, astronomers have observed 55 massive stars ejected from their home star cluster in the Large Magellanic Cloud at speeds equivalent to 80 times the speed of sound.
Rare illusion gives 'once-in-a-lifetime' comet a seemingly impossible 2nd tail after closest approach to Earth for 80,000 years
By Harry Baker published
New photos of comet Tsuchinshan-ATLAS appear to show a faint "anti-tail" pointing away in the wrong direction. The puzzling extra limb is the result of a rare illusion that is only possible when our planet is in a certain position.
Phew! No 'doomsday' asteroids hide in famous broken comet's debris stream
By Keith Cooper published
The Taurid Meteoroid Stream, which is possibly responsible for the famous Tunguska and Chelyabinsk impacts, probably doesn't hide a civilization-killing asteroid.
Jupiter's Great Red Spot is being squeezed, Hubble Telescope finds — and nobody knows why
By Keith Cooper published
The Hubble Space Telescope has seen Jupiter's Great Red Spot oscillating in width as it drifts around the planet. Could this be related to its overall shrinking?
Record-breaking ancient spinning galaxy challenges cosmic evolution theories
By Robert Lea published
Astronomers have discovered the earliest strongly rotating galaxy ever seen that's well-organized rather than chaotic, challenging theories of cosmic evolution.
The biggest supermoon of the year is about to rise: When to see the 'Hunter's Moon' at its best and brightest
By Jamie Carter published
The Hunter's Moon will be the first full moon of autumn when it rises on Oct. 17. It will also be the third and closest supermoon of the year.
Space photo of the week: See the gorgeous Rosette Nebula — before it destroys itself
By Jamie Carter published
The Dark Energy Camera imaged the Rosette Nebula, capturing a kaleidoscope of color created by the star cluster born within it.
'Severe' solar storm that hit Earth Thursday could be 'global phenomenon' with auroras as far south as California
By Brandon Specktor last updated
A powerful solar outburst hit Earth Thursday, triggering a "severe" geomagnetic storm. Auroras could be visible as far south as California and Alabama, NOAA predicts.
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