Posts by 

Daniela Breitman

Jan Oort: Celebrating his birthday and life

Dutch astronomer Jan Oort was born on April 28, 1900. He visualized a vast reservoir of icy comets on the fringes of our solar system, which now bears his name.

Today in science: Comet Hale-Bopp

25 years ago on April 1, 1997, Comet Hale-Bopp was at perihelion, its closest point to the sun. This comet - remembered by many - was the last widely seen comet from the Northern Hemisphere.

Happy birthday to Galileo, born February 15

One of our greatest astronomers, Galileo Galilei, was born February 15, 1564. His discoveries with the telescopes he made changed the way we view the universe.

Sally Ride: 1st American woman in space

Ride was the 1st American woman to go to space, flying on the STS-7 space shuttle Challenger mission in 1983, and later on another mission in 1984.

Today in science: Carl Sagan born this date

For many, for decades, Carl Sagan was the best-known astronomer on Earth. He popularized astronomy in a popular TV series. Today is his birthday.

Gravitational anomaly seen in lab crystal

An exotic effect in particle physics, theorized to occur in immense gravitational fields — near a black hole, or in conditions just after the Big Bang — has been seen in laboratory crystal.

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.

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.