Astronomy

A supernova observed by Chinese and Japanese astronomers in 1181 CE didn’t fully explode, instead it sputtered and left behind a rare “zombie star” surrounded by long filaments resembling fireworks. New research by Syracuse University physicist Eric Coughlin explains how these unusual structures formed. After the failed detonation, the surviving white dwarf launched a fast, dense wind that slammed into surrounding gas. The collision created finger-like plumes through a fluid instability, but a second instability that normally tears such structures apart never activated. In some sense, the stars didn’t quite die!

A star forming region

A female mouse that spent two weeks aboard China’s space station has successfully given birth to healthy pups after returning to Earth. This marks the first time offspring have been born from mammals that have traveled in space. The birth demonstrates that short term spaceflight doesn’t impair reproductive capability and provides crucial data for understanding how space environments affect mammalian development, a critical question for future long-l duration human missions beyond Earth.

An explorer and a glaciologist are kite-skiing across Antarctica with a ground-penetrating radar to gather data that will help understand the past and future of the ice sheet

An explorer and a glaciologist are kite-skiing across Antarctica with a ground-penetrating radar to gather data that will help understand the past and future of the ice sheet

How did hot Jupiters end up orbiting so close to their stars, thus earning their moniker? This is what a recent study published in The Astronomical Journal hopes to address as a team of researchers from The University of Tokyo investigated the orbital evolution of hot Jupiters ended, specifically regarding where their orbits started before orbiting so close to their stars. This study has the potential to help scientists better understand the formation and evolution of exoplanets and what this could mean for finding life beyond Earth.

Scientists have discovered that moons could theoretically orbit all seven planets in the TRAPPIST-1 system despite the complex gravitational environment. Using computer simulations, a team of researchers have mapped stable zones where satellites could survive around each planet. They found that moons can remain stable up to about 40-45% of each planet’s sphere of gravitational influence. The neighbouring planets squeeze these stable zones slightly inward compared to isolated planets, but the effect is modest. Long term calculations suggest only tiny moons, roughly one ten millionth the mass of Earth, could survive the immense tidal forces.

The brutal respiratory infection has infected tens of thousands and killed at least 13 people in the U.S. in 2025

In 1892, astronomer Edward Emerson Barnard thought he saw a bright star near Venus, but then it vanished. We may now know why

In 1892, astronomer Edward Emerson Barnard thought he saw a bright star near Venus, but then it vanished. We may now know why

NASA’s Curiosity Mars rover used its black-and-white navigation cameras to capture panoramas at two times of day on Nov. 18, 2025, spanning periods that occurred on both the 4,722nd and 4,723rd Martian days, or sols, of the mission. The panoramas were captured at 4:15 p.m. on Sol 4,722 and 8:20 a.m. on Sol 4,723 (both at local Mars time), then merged together. Color was later added for an artistic interpretation of the scene with blue representing the morning panorama and yellow representing the afternoon one.

Reflect Orbital plans to launch thousands of reflective mirrors to produce "sunlight on demand", but researchers are sceptical about whether the reflected light will be enough to generate electricity

Reflect Orbital plans to launch thousands of reflective mirrors to produce "sunlight on demand", but researchers are sceptical about whether the reflected light will be enough to generate electricity

Drugs like Ozempic, Wegovy and Zepbound have transformed how we treat obesity, but more effective treatments could be down the road

Drugs like Ozempic, Wegovy and Zepbound have transformed how we treat obesity, but more effective treatments could be down the road

After the New START treaty expires in February, there will be no cap on the number of US and Russian nuclear weapons - but some are sceptical about whether the deal actually made the world safer

After the New START treaty expires in February, there will be no cap on the number of US and Russian nuclear weapons - but some are sceptical about whether the deal actually made the world safer

After the New START treaty expires in February, there will be no cap on the number of US and Russian nuclear weapons - but some are sceptical about whether the deal actually made the world safer

After the New START treaty expires in February, there will be no cap on the number of US and Russian nuclear weapons - but some are sceptical about whether the deal actually made the world safer

The BepiColombo mission has been on its way to Mercury since 2018 and will finally start orbiting the planet and taking X-ray images in the second half of 2026