Sun

Earth can only hold so many photography subjects – but the universe is basically infinite, and so is its beauty. The Astrophotography Prize is a relatively new international competition that celebrates this art, and this year’s winners have been unveiled.

Few photography subjects offer the breadth of beauty as astronomy, and the Royal Observatory Greenwich’s annual Astronomy Photographer of the Year awards celebrate that. The winners for 2024 have now been crowned, including breathtaking cosmic shots.

The Sun is the biggest fish in our small pond of a solar system, but it’s a mere minnow compared to the whales that dwell out in the cosmos. New telescope images show a gigantic star casually blowing bubbles 75 times bigger than our Sun.

If you’re planning to see the aurora soon, keep an eye out for a brand new type of sky glow that’s just been discovered. This short-lived phenomenon only appears after midnight and seems to be the inverse of something just spotted a few years ago.

While millions of people who couldn't normally see the aurora took in the recent color-filled spectacle in the night sky, NASA's Solar Dynamics Observatory was looking straight at the sun to catch the action. The fiery footage is well worth a watch.

The solar wind is constant in the solar system – except on Christmas Day 2022 when it suddenly vanished completely. The event was detected by a NASA spacecraft orbiting Mars, which found that the Red Planet’s magnetosphere tripled in size in response.

Astronomers have witnessed a phenomenon never seen before, a luminous fast blue optical transient (LFBOT) emitting more energy than hundreds of billions of stars the size of the Sun. Dubbed the Tasmanian Devil, it threw out energetic flares for months.

The way a sunflower bends to follow the Sun across the sky each day can be quite dramatic. Now, scientists have uncovered something equally dramatic: it does it through unique genetic transcription, which rewrites what we know about its special Sun dance.

Our Sun is capable of terrifying outbursts – and now scientists have discovered evidence of its biggest tantrum on record. Tree rings dating back 14,000 years contain a radiocarbon spike twice as powerful as the previous biggest known solar storm.

Lifestyle interventions to treat or prevent type 2 diabetes and obesity are not the easiest changes. Now, a study suggests that a prescribed period of natural light during the day could significantly improve health markers, with little effort required.

India is furthering its bid to become a major spacefaring power. The launch of its first mission to the Sun comes just as it winds down its first successful robotic Moon landing, with the Pragyan lunar rover completing its work and going into sleep mode.

Solar wind – charged particles from the Sun – pervades our solar system, but the exact mechanism behind it remains murky. Now ESA’s Solar Orbiter spacecraft has observed previously unknown tiny flares on the Sun’s surface spewing plasma into space.