Space
- Space
Let’s learn about the hunt for alien life
Finding any extraterrestrials, from advanced alien civilizations to simple microbes, would be an unmatched discovery.
- Space
Explainer: Calculating a star’s age
Scientists can figure out a star's mass or composition pretty easily. Determining how old that star is, however, is a lot harder.
- Space
Let’s learn about auroras
A gust of charged particles from the sun called the solar wind lights up auroras on Earth — and on other planets.
- Planets
NASA’s Perseverance rover grabbed its first Martian rocks
Two finger-sized pieces of stone drilled from a basalt rock are the first bits of Mars ready to be brought to Earth.
- Planets
Pluto is no longer a planet — or is it?
In the 15 years since Pluto lost its status as a planet, some scientists continue to use whatever definition works best for them.
- Space
Here’s an easier new way to weigh a black hole
The timing of flickers in the gas and dust of a black hole’s accretion disk correlates to its mass, a new study finds.
- Earth
Let’s learn about meteor showers
Meteor showers happen when Earth’s orbit passes through trails of debris left behind by comets or asteroids.
- Planets
Jupiter’s intense auroras heat up its atmosphere
Jupiter’s hotter-than-expected upper atmosphere may be warmed by charged particles slamming into the air above the poles.
- Space
Explainer: How auroras light up the sky
The northern and southern lights are considered natural wonders of the world. Here’s how these and related splendid sky glows form.
- Space
Let’s learn about dark matter
Dark matter is only detectable by the gravitational pull it exerts on visible objects, like stars and galaxies.
- Space
This image may be the first look at exomoons in the making
These observations offer some of the best evidence yet that planets around other stars have moons, or exomoons.
- Space
Born in deep shadows? That could explain Jupiter’s strange makeup
Dust that blocked sunlight might have caused the gas giant to form in a deep freeze, a new study suggests.
