Space

Astronomy

A supernova’s delayed reappearance could pin down how fast the universe expands

“SN Requiem” should reappear in the 2030s and help determine the universe’s expansion rate.

Planetary Science

NASA’s Perseverance rover snagged its first Martian rock samples

Two tubes of stone drilled from a basalt rock nicknamed Rochette are the first from Mars slated to eventually return to Earth.

Cosmology

Astronomers may have seen a star gulp down a black hole and explode

It took sleuthing through data collected by a variety of observatories to piece together the first firm evidence of a theorized cosmic phenomenon.

Astronomy

How radio astronomy put new eyes on the cosmos

A century ago, radio astronomy didn’t exist. But since the 1930s, it has uncovered cosmic secrets from planets next door and the faint glow of the universe’s beginnings.

Astronomy

New ideas on what makes a planet habitable could reshape the search for life

New definitions of “habitable worlds” could include planets with global oceans under a steamy hydrogen atmosphere or exclude ones that started out habitable but lost all their water.

Planetary Science

50 years ago, astronomers were chipping away at Pluto’s mass

Prior to the discovery of Pluto’s moon Charon, astronomers struggled to pin down the dwarf planet’s mass.

Cosmology

‘Flashes of Creation’ recounts the Big Bang theory’s origin story

In ‘Flashes of Creation,’ author Paul Halpern tells the story of George Gamow , Fred Hoyle and their decades-long sparring match about the Big Bang.

Astronomy

The definition of planet is still a sore point – especially among Pluto fans

In the 15 years since Pluto lost its planet status, scientists have continued to use the definition that works for them.

Astronomy

Here’s how cool a star can be and still achieve lasting success

The dividing line between successful stars and failed ones is a surface temperature of about 1,200° to 1,400° Celsius, a new study reports.

Planetary Science

See some of the most intriguing photos from NASA’s Perseverance rover so far

Six months ago, Perseverance landed on the Red Planet. Here’s what the rover has been observing.

Space

Vera Rubin’s work on dark matter led to a paradigm shift in cosmology

‘Bright Galaxies, Dark Matter, and Beyond’ tells the story of how astronomer Vera Rubin provided key evidence for the existence of dark matter.

Space

Jupiter’s intense auroras superheat its upper atmosphere

Jupiter’s hotter-than-expected upper atmosphere may be caused by high-speed charged particles slamming into the air high above the poles.