Space
We summarize the week's scientific breakthroughs every Thursday.
- Planetary Science
This is the biggest known comet in our solar system
The nucleus of comet Bernardinelli-Bernstein is about 120 kilometers across — about twice the width of Rhode Island — and is darker than coal.
- Planetary Science
New thermal maps of Neptune reveal surprising temperature swings
Neptune's atmospheric temperatures show a global drop and later, a weird isolated spike at the south pole. Scientists don't yet know why.
- Planetary Science
Mars has two speeds of sound
High-pitched clacks from a laser on NASA’s Perseverance rover zapping rocks traveled faster than the lower-pitched hum of the Ingenuity helicopter’s blades.
- Astronomy
A star nicknamed ‘Earendel’ may be the most distant yet seen
Analyzing Hubble Space Telescope images revealed a star whose light originates from about 12.9 billion light-years away, researchers say.
- Space
Binary stars keep masquerading as black holes
The drive to find black holes in ever-larger astronomy datasets is leading some researchers astray.
- Astronomy
When the Magellanic Clouds cozy up to each other, stars are born
The Magellanic Clouds, the two closest star-making galaxies to the Milky Way, owe much of their stellar creativity to each other.
- Astronomy
Here’s the best timeline yet for the Milky Way’s big events
A new study puts more precise dates on when the Milky Way formed its thick disk and collided with a neighboring galaxy.
- Physics
Levitating plastic beads mimic the physics of spinning asteroids
"Tabletop asteroids," buoyed by sound waves, hint at why some loosely bound space rocks have odd shapes and can’t spin too quickly.
- Astronomy
NASA’s exoplanet count surges past 5,000
With a new batch of 60 confirmed exoplanets, the number of known worlds in our galaxy reaches another milestone.
- Astronomy
The universe’s background starlight is twice as bright as expected
Images from the New Horizons spacecraft suggest that light from all known galaxies accounts for only half of the cosmos’ visible background glow.
- Planetary Science
Diamonds may stud Mercury’s crust
Billions of years of meteorite impacts may have flash-baked much of a primitive graphite crust into precious gemstones.
- Astronomy
Some of the sun’s iconic coronal loops may be illusions
Folds in the plasma that streams from the sun might trick the eye into seeing the well-defined arches, computer simulations of the solar atmosphere show.
