Cosmic radiation

A vast spiral galaxy alongside the Milky Way for a scale comparison of the universe. Credit: Bagchi and Ray et al/Hubble Space Telescope

Monstrous jets from black hole in spiral galaxy may foretell Milky Way's terrifying future

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A giant spiral galaxy with powerful jets from a black hole has shocked scientists, because it shows that even galaxies like ours can release dangerous radiation at some point.
Radiation from active galactic nuclei (AGN), usually thought to be deadly, may actually help life thrive – by strengthening the protective ozone layer in oxygen-rich atmospheres, thus making planets more resilient. Credit: IRLab/NSF/AURA/J. daSilva/M. Zamani

Black holes may contribute to the flourishing of life on nearby planets

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New research reveals that radiation from active galactic cores can strengthen the protective ozone layer in oxygen-rich atmospheres and protect life from extinction.
Night launch of a Falcon 9 rocket for the Transporter 13 project, in which 9 Israeli student satellites were launched. Photo: SpaceX

A group of 9 research satellites built by Israeli high school students from all sectors was launched into space

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Artist's impression of one of the Voyager spacecraft launched in 1977, Credit: NASA/JPL-Caltech

NASA will shut down instruments on Voyager spacecrafts to save power

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On February 24, 2025, the radiation sensor system on Voyager 1 was shut down, and on March 24, the same system will be shut down on Voyager 2.
This image taken by Webb shows an ancient quasar (in the red circle) with fewer neighboring galaxies than expected. Credit: Christina Eilers/EIGER team

The Webb Space Telescope discovers quasars where they shouldn't exist

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Astronomers have used the Web to discover individual ancient quasars of uncertain origin
An astronaut exercises in space to keep fit and healthy. Illustration: depositphotos.com

Will astronauts' kidneys survive a round trip to Mars?

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The results showed that both human and animal kidneys undergo "remodeling" by the conditions in space, with specific renal tubules responsible for calibrating calcium and salt balance showing signs of shrinkage after less than a month
A blazar fires a jet of cosmic rays and neutrinos towards Earth and is absorbed by the IceCube facility at the South Pole. Figure IceCube/NASA

A collaboration between the neutrino detector and a space telescope led to the identification of a source producing cosmic rays for the first time

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Protective vest against radiation. Photo: StemRad company

Lockheed Martin and Israel's StemRad are testing a radiation shielding vest for first responders for possible use on space flights

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Prof. Kyle Kramer, New York University. Photo: Avi Blizovsky

Turn your mobile phone into a cosmic particle detector

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Orion Nebula. Photo: NASA. Processing: shutterstock

Low orbit - an ULTRASAT satellite based on Israeli technology, will scan the sky in the ultraviolet range

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Victor Hess prepares to fly in a hot air balloon

An Unfolding Mystery: One Hundred Years of the Discovery of Cosmic Radiation

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Illustration of the Van Allen belt, photo: NASA

A belt of antimatter surrounds the Earth

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NASA logo

20 Future NASA Missions

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Cosmic scene with DNA, stars, solvents and atomic circles in oral flow.

Cosmic rays are too weak to affect the climate

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