All Stories by Lisa Grossman
- 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.
- Astronomy
A stream of cold gas is unexpectedly feeding the far-off Anthill Galaxy
The finding suggests that early galaxies might have gained more of their bulk from streams of cold gas instead of in violent galaxy collisions.
- Astronomy
A neutron star collision may have emitted a fast radio burst
Astronomers spotted both a fast radio burst and gravitational waves from a cosmic smashup in the same part of the sky and at about the same time.
- Space
‘Off-Earth’ asks how to build a better future in space
As humans prepare to live in space someday, ethics should be as much of guide as science and technology, an astrophysicist argues in a new book.
- Planetary Science
A volcano on Venus was spotted erupting in decades-old images
A new look at old data reveals an eruption on Venus in the 1990s that was probably similar to Hawaii’s Kilauea eruption in 2018.
- Astronomy
A runaway black hole has been spotted fleeing a distant galaxy
A bright streak stretching away from a remote galaxy might be the light from stolen gas and new stars caught in the wake of an escaping black hole.
- Astronomy
Newborn stars sculpt their galaxies in new James Webb telescope images
Dark voids riddle the galaxies’ faces, highlighting previously invisible details about how new stars alter their locales.
- Astronomy
Half of all active satellites are now from SpaceX. Here’s why that may be a problem
Of the roughly 7,300 active satellites in Earth orbit, about 3,600 are part of SpaceX’s growing fleet of Starlink internet satellites.
- Astronomy
The James Webb telescope found six galaxies that may be too hefty for their age
The galaxies formed in the universe’s first 700 million years and may be up to 100 times more massive than predicted.
- Astronomy
The James Webb telescope spotted the earliest known ‘quenched’ galaxy
A galaxy dubbed GS-9209 ceased forming stars more than 12.5 billion years ago after a 200-million-year-long sprint.
- Astronomy
The Kuiper Belt’s dwarf planet Quaoar hosts an impossible ring
Quaoar’s ring lies outside the Roche limit, an imaginary line beyond which rings aren’t thought to be stable.
- Astronomy
New data show how quickly light pollution is obscuring the night sky
Tens of thousands of observations from citizen scientists spanning a decade show that the night sky is getting about 10 percent brighter every year.
