Space
- Planetary Science
Salt may have carved out Mercury’s terrains, including glacierlike features
Mercury may contain a planetwide cache of salt that has sculpted chaotic terrain and possibly even habitable niches.
- Planetary Science
A toxic gas that could help spawn life has been found on Enceladus
Cassini data indicate that hydrogen cyanide, a key building block for life, exists on Saturn’s icy moon. A snakelike NASA robot might test for sure.
- Life
These scientific discoveries set new records in 2023
This year’s record-breaking findings shed new light on human history and the most amazing feats in the animal kingdom.
- Earth
STEVE and other aurora-like glows perplex scientists with their complex physics
New views of STEVE from citizen scientists keep raising questions about the atmospheric light show — but computer models may offer some answers.
- Space
In 2023, space missions explored the moon, asteroids and more
This year, spacecraft landed on the moon, dropped off asteroid samples to Earth and started a journey to Jupiter's icy moons.
- Math
Here are some astounding scientific firsts of 2023
Notable feats include discovering a planet-eating star, extracting RNA from an extinct animal and more.
- Earth
Here are some big-if-true scientific claims that made headlines in 2023
Hominid cannibalism, “dark stars,” the secrets of Earth’s core and more tantalizing findings will require more evidence before scientists can confirm them as fact.
- Astronomy
A bar of stars at the center of the Milky Way looks surprisingly young
The ages and locations of metal-rich stars in the galaxy suggest the Milky Way’s central bar finished forming just a few billion years ago.
- Space
The James Webb telescope took some stunning images in 2023
Star nurseries. Planets. Supernova remnants. Here’s a look at some of this year’s stellar JWST images. And the mission is still just getting started.
- Astronomy
How tiny red stars can test ideas about the origin of life
A survey of ultracool dwarf stars finds they don’t emit enough UV light to kick-start life, but they could reveal other ways for life to get going.
- Astronomy
50 years ago, astronomers challenged claims that Barnard’s star has a planet
Astronomers have been searching for planets around the sun’s close neighbor for decades.
- Space
A telescope dropped dark matter data from the edge of space. Here’s why
Last May, NASA’s Super Pressure Balloon Imaging Telescope crash-landed in rural Argentina. Scientists scrambled to recover the dark matter data aboard.
