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.

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. 

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.