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space-time

2CE844B Infinity tunnel pocket watch time, time travel concept

Physics

How physics is helping us to explain why time always moves forwards

While time is relative, it still flows in one direction for every observer. We don’t yet understand why, but some physicists are looking for answers that invoke the evolution of entropy, says Chanda Prescod-Weinstein

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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

Features

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

Features

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

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

Space

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

Features

Space

JWST spotted an incredible number of supernovae in the early universe

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What

Physics

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

Features

Astronauts Robert L. Curbeam Jr. (left) and Christer Fuglesang on the International Space Station

Health

Astronaut medical records reveal the health toll of space travel

The largest collection yet of detailed medical data and tissue samples from astronauts should help researchers better understand the impacts of space flight on health

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Space

Starliner and Starship launches propel space industry into a new era

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Physics

How to wrap your mind around the real multiverse

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Space

Starship launch: Fourth test succeeds as both stages splash into sea

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Comment

These are the best new science fiction books to read this June 2024

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