Enjoying EarthSky? Subscribe.

254,342 subscribers and counting ...

Daniela Breitman

Maryam Mirzakhani, mathematician, dies at 40

She was an outstanding mathematician and first woman to receive the prestigious Fields Medal. Maryam Mirzakhani died on July 14 after a several-year battle with breast cancer.

Today in science: Sally Ride in space

She was the 1st American woman in space, eventually flying on 2 shuttle missions. She played a key role in the investigation of the Challenger disaster. And she inspired people.

Wow! signal explained after 40 years?

New evidence suggests the well-known Wow! signal from 1977 – long thought by some to be a sign of extraterrestrial life – was in fact generated by a passing comet.

Biggest 3D map of the universe yet

Astronomers from the Sloan Digital Sky Survey used the most luminous objects in the universe – quasars – to create their new 3D map of space.

Is there life on Saturn’s moon?

A form of chemical energy that can support life appears to exist on Saturn’s moon Enceladus. 

Comet Encke nearest sun March 10

Faithful Comet Encke is one of the shortest-period comets known. Its frequent returns near the sun helped reveal the true nature of comets.

How do astronomers find exoplanets?

Stars are incredibly bright in contrast to any planets that may be orbiting them. So finding exoplanets – planets orbiting distant suns – isn’t easy. Here’s how it’s done.

Today in science: Launch of Explorer 1

Launched on January 31, 1958, it was the 1st American satellite and 1st satellite to measure the environment of near-Earth space.

Today in science: Voyager 2 meets Uranus

In January 1986, Voyager 2 became the first and, so far, the only craft from Earth to see Uranus up close. It discovered a magnetic field and radiation belts, 2 new rings and 10 new moons.

Why do fatty foods taste so good?

Why do we like fatty foods so much? Fat gives foods some special qualities we like. Plus, the close tie between fat, flavor, fullness, and happiness might be an evolutionary adaptation.