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LightSail 2

Space

SpaceX is about to launch a sail propelled through space by sunshine

The Planetary Society’s LightSail-2 satellite, which uses sails to harness the energy of sunlight, is planned to launch on 24 June aboard a SpaceX Falcon Heavy rocket

News

Don't miss: men on the moon, robots in orbit and museums in the street

Space

Don't miss: men on the moon, robots in orbit and museums in the street

Culture

Mercury

Space

How Mercury and Venus can guide our hunt for alien life on exoplanets

Features

A comet in the solar system

Space

ESA plans triple spacecraft to lurk in wait for a speedy comet

News

Albert Einstein smoking a pip

People in Science

Albert Einstein

OSIRIS-REx spacecraft captures closest ever image of asteroid Bennu

Space

OSIRIS-REx spacecraft captures closest ever image of asteroid Bennu

News

Cosmic microwave background

Definition

Cosmic microwave background

General_relativity

Definition

General relativity

Hubble Space Telescope

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Hubble Space Telescope

astronauts

Space

Mission to Mars: The complete guide to getting to the Red Planet

Humanity's first Mars mission will need a big rocket, lots of free time, reliable team mates and lots of NASA cash. Here's our 5-step plan to get people to the planet and back

Features

Definition

Second law of thermodynamics

Definition

Black holes

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Earthrise

Space

NASA will let people pay to stay on the International Space Station

News