91av

Skip to content

Image of Mars from the Hubble Space Telescope

Space

Ice at Mars’s equator hints the planet was once much more tilted

Most of the water on Mars is at its poles, but ice near the equator may mean that the way the red planet is tilted has changed over the last few million years

News

Victor M. Blanco Telescope and stars

Space

New sky survey shows that dark energy may one day tear us apart

News

Milky Way visible in the sky above some mountains

Space

Half the atoms inside your body came from across the universe

News

Diagram showing three-body system

Space

The cosmic dance of three dead stars could break relativity

News

Galaxy supercluster is one of the biggest things in the universe

Space

Galaxy supercluster is one of the biggest things in the universe

News

Person throws up at hands standing at blackboard covered in equations

Physics

Five things physicists hate about physics

Features

When is a black hole not a black hole? When it’s a boson star

Space

When is a black hole not a black hole? When it’s a boson star

Features

Pointer on circular weighing scales

Physics

Protons are lighter than thought, which may solve a big puzzle

News

Diagram of a buckyball

Space

Buckyballs mysteriously show up in cold space and warp starlight

News

Astronomer looking through telescope

Space

Time to embrace our odd place in the cosmos, inside a huge void?

Evidence is growing that our neck of the universe is a whole lot of nothing. This alluring idea could settle a cosmological bun fight, says Geraint Lewis

Comment

Earth

The mystery xenon in Earth’s atmosphere came from icy comets

News

Space

The Higgs bang: The particle that blew up the universe

Features

Space

Huge impact could have smashed early Earth into a doughnut shape

News

Earth

Odds on: Five scientific theories decided by wager

Features