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Space

Zombie galaxy came back to life after 20 million years

Galaxies that stop making stars don’t usually start up again, but now we’ve seen one wake from the dead for the first time – and it may explain what we’ve got wrong about galaxies in the early universe

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Wireframe view of the east and west walls, and floor, of the Mare Tranquillitatis pit

Space

Deep pit on moon may be entrance to cave that could act as lunar base

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Space

Ariane 6 rocket launch: What is it and when is it happening?

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Mathematics

Is the universe a game?

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Space

‘Little red dot’ galaxies are breaking theories of cosmic evolution

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HY0AKX Little green alien and welcome sign welcomes visitors to a business in Roswell, New Mexico

Space

Why our location in the Milky Way is perfect for finding alien life

Features

https://www.esa.int/ESA_Multimedia/Images/2022/07/Stephan_s_Quintet_NIRCam_and_MIRI_imaging Stephan?s Quintet ? NIRCam and MIRI imaging An enormous mosaic of Stephan?s Quintet is the largest image to date from the NASA/ESA/CSA James Webb Space Telescope, covering about one-fifth of the Moon?s diameter. It contains over 150 million pixels and is constructed from almost 1,000 separate image files. The visual grouping of five galaxies was captured by Webb?s Near-Infrared Camera (NIRCam) and Mid-Infrared Instrument (MIRI). With its powerful, infrared vision and extremely high spatial resolution, Webb shows never-before-seen details in this galaxy group. Sparkling clusters of millions of young stars and starburst regions of fresh star birth grace the image. Sweeping tails of gas, dust and stars are being pulled from several of the galaxies due to gravitational interactions. Most dramatically, Webb?s MIRI instrument captures huge shock waves as one of the galaxies, NGC 7318B, smashes through the cluster. These regions surrounding the central pair of galaxies are shown in the colours red and gold. This composite NIRCam-MIRI image uses two of the three MIRI filters to best show and differentiate the hot dust and structure within the galaxy. MIRI sees a distinct difference in colour between the dust in the galaxies versus the shock waves between the interacting galaxies. The image processing specialists at the Space Telescope Science Institute in Baltimore opted to highlight that difference by giving MIRI data the distinct yellow and orange colours, in contrast to the blue and white colours assigned to stars at NIRCam?s wavelengths.

Space

How big is the universe? The shape of space-time could tell us

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Are space and time illusions? The answer could lie in black holes

Physics

Are space and time illusions? The answer could lie in black holes

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The Serpens Nebula

Space

Stunning JWST image proves we were right about how young stars form

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Titan as snapped by NASA's Cassini spacecraft showing the sun glinting off of the moon's north polar seas

Space

Saturn's moon Titan is experiencing coastal erosion from methane seas

Saturn’s moon Titan has coastlines matching ones on Earth that have been carved by waves, hinting that Titan’s hydrocarbon seas and lakes also has them

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Space

Is an old NASA probe about to redraw the frontier of the solar system?

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Space

JWST spotted an incredible number of supernovae in the early universe

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Physics

What "naked" singularities are revealing about quantum space-time

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Health

Astronaut medical records reveal the health toll of space travel

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