Astronomy
- Astronomy
New Horizons may have seen a glow at the solar system’s edge
New Horizons may have seen a hydrogen wall just past the edge of the solar system, where the solar wind meets the stuff of interstellar space.
- Astronomy
Astronomers saw the first mass eruption from a star that’s not the sun
The first coronal mass ejection observed fleeing another star was as massive as scientists expected, but carried less energy.
- Astronomy
Hopes dim that gamma rays can reveal dark matter
A mysterious glow of gamma rays coming from the center of the Milky Way probably isn’t a sign of dark matter.
- Astronomy
Next to its solar twins, the sun stands out
Our sun has subtly different chemistry from its peers, which may help pinpoint stars with systems like our own.
- Astronomy
How the Parker probe was built to survive close encounters with the sun
Scientists had to get creative in testing the technology for the Parker Solar Probe, using huge mirrors, dust tunnels and even reams of paper.
- Physics
A star orbiting a black hole shows Einstein got gravity right — again
For the first time, general relativity has been confirmed in the region near a supermassive black hole.
- Physics
The Planck satellite’s picture of the infant universe gets its last tweaks
Scientists have released the last big result from the cosmic microwave background experiment Planck.
- Particle Physics
One particle’s trek suggests that ‘spacetime foam’ doesn’t slow neutrinos
Neutrinos and light travel at essentially the same speed, as predicted.
- Astronomy
Move over, Hubble. This sharp pic of Neptune was taken from Earth
A new strategy at the Very Large Telescope lets astronomers take space telescope–quality pictures from the ground.
- Particle Physics
50 years ago, neutrinos ghosted scientists
In the last half-century, neutrino detectors have spotted particles cast out by the sun, supernova 1987A and a supermassive black hole.
- Particle Physics
A high-energy neutrino has been traced to its galactic birthplace
The high-energy particle was born in a blazar 4 billion light-years away, scientists report.
- Astronomy
The ecosystem that controls a galaxy’s future is coming into focus
An invisible cloak called the circumgalactic medium controls a galaxy’s life and death.
