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space flight

Space

Why it's taking a century to pin down the speed of the universe

The Hubble constant, a set number that connects a galaxy’s speed to its distance from Earth and tells us how fast the universe is expanding, was first described more than a hundred years ago – but astronomers have debated it ever since

News

Our verdict on Ringworld by Larry Niven: Nice maths, shame about Teela

Comment

Our verdict on Ringworld by Larry Niven: Nice maths, shame about Teela

Culture

Technology

Trump's Golden Dome defence project could spur a space arms race

News

Caption The ICEPIC sampling tool drilling into the ice at sampling site A of the Matanuska Glacier, AK, field trial. Credit NASA/JPL-Caltech

Technology

See the robot that may one day search for life on Jupiter's icy moon

News

EWXH9C THE MARTIAN (2015) MATT DAMON RIDLEY SCOTT (DIR)

Space

A doe-eyed look at space exploration is inadequate for the zeitgeist

Culture

2T1GT7B Artwork of Accelerating Universe

Physics

How dark energy findings may inspire a new generation of physics nerds

Comment

Space

One half of the moon is hotter than the other

News

This new Picture of the Month from the NASA/ESA/CSA James Webb Space Telescope features an astounding number of galaxies. The objects in this frame span an incredible range of distances, from stars within our own Milky Way, marked by diffraction spikes, to galaxies billions of light-years away.?? The star of this image is a group of galaxies, the largest concentration of which can be found just below the centre of this image. These galaxies glow with white-gold light. We see this galaxy group as it appeared when the Universe was 6.5 billion years old, a little less than half the Universe???s current age. More than half of the galaxies in our Universe belong to galaxy groups like the one pictured here. Studying galaxy groups is critical for understanding how individual galaxies link up to form galaxy clusters, the largest gravitationally bound structures in the Universe. Belonging to a galaxy group can also alter the course of a galaxy???s evolution through mergers and gravitational interactions. The galaxy group pictured here is the most massive group in what???s called the COSMOS-Web field. COSMOS stands for Cosmic Evolution Survey. This survey has enlisted several telescopes, including Webb, the NASA/ESA Hubble Space Telescope, and ESA???s XMM-Newton space observatory to gaze deeply at a single patch of sky.?? COSMOS-Web aims to understand how massive structures like galaxy clusters came to be. Webb???s infrared capabilities and sensitive instruments have pushed the search for galaxy groups farther back into cosmic history, revealing galaxy groups as far back as when the Universe was only 1.9 billion years old ??? just 14% of its current age. This image combines infrared data from Webb???s Near-InfraRed Camera (NIRCam) instrument with further infrared observations from the Hubble Space Telescope. The X-ray data, shown in purple, highlights the presence of hot gas concentrated within the X-ray galaxy group. These X-ray data come from ESA???s XMM-Newton space observ

Space

Colourful group of galaxies offers peek into history of the universe

News

Physics

Why physicists keep trying to get rid of space-time entirely

Comment

Let's remember that extraordinary claims need extraordinary evidence

Life

Let's remember that extraordinary claims need extraordinary evidence

Several recent scientific findings, including signs of life on an exoplanet and 'de-extinction' of the dire wolf have caused a stir but when a claim seems too good to be true it probably is

Leader

Space

Claims of alien life are overhyped – and miss the real accomplishment

Comment

Space

Most accurate space clock to launch – and count down to destruction

News

Technology

Inside the outlandish, futuristic dreams of the tech bros

Culture

Space

New ÒÁÈ˾þà recommends The Martian – sci-fi fun for all the family

Culture

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