Space
- Space
50 years ago, cosmic rays may have caused Apollo astronauts to see lights
Apollo astronauts reported seeing flashes of light where there were none. Fifty years later, the flashes still mess with modern astronauts’ vision.
- Astronomy
A reappearing supernova offers a new measure of the universe’s expansion
Supernova Refsdal blew up once but burst into view at least five times. The timing of its appearances provides clues to how fast the universe is growing.
- Planetary Science
Why you shouldn’t use magnets when looking for meteorites
A popular tool for identifying meteorites can overwrite records of magnetic fields stored within the space rocks.
- Astronomy
The James Webb telescope revealed surprise asteroids in the Fomalhaut star system
New images of Fomalhaut confirm that an alleged planet is probably just dust while also revealing a new asteroid belt and a “Great Dust Cloud.”
- Space
Salty water may have flowed near Mars’ equator as recently as 400,000 years ago
Crusts and cracks on Martian sand dunes are a sign salty water flowed near the equator thousands, not billions, of years ago — and may still exist.
- Astronomy
A streak of light may not be a black hole fleeing its galaxy after all
A suspicious trail of starlight may just be a spiral galaxy seen edge on, not stars that formed in the wake of a runaway supermassive black hole.
- Astronomy
For the first time, astrophysicists have caught a star eating a planet
A burst of light and a cloud of dust are signs that a star 12,000 light-years away swallowed a planet up to 10 times the mass of Jupiter.
- Planetary Science
Seismic waves crossing Mars’ core reveal details of the Red Planet’s heart
NASA’s InSight lander observed a quake and an impact on the farside of Mars, allowing researchers to measure physical properties of the planet’s core.
- Space
Rocky planets might have been able to form in the early universe
The James Webb telescope spied planet-building material around young stars in a nearby galaxy whose chemical makeup matches that of the early cosmos.
- Astronomy
Cosmic antimatter hints at origins of huge bubbles in our galaxy’s center
An excess of positrons in Earth’s vicinity supports the idea that the Fermi bubbles were burped by the Milky Way’s supermassive black hole long ago.
- Planetary Science
Saturn’s icy rings are probably heating its atmosphere, giving it an ultraviolet glow
Detecting similar emission from a distant world could help astronomers find other planets that boast bright and beautiful rings.
- Astronomy
The first black hole portrait got sharper thanks to machine learning
A machine learning technique filled in data gaps in the image of M87’s black hole, resulting in a thinner ring.
