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Ultraviolet radiation

Image: Horsehead Nebula (NASA Webb NIRCam): This image of the Horsehead Nebula, taken by NASA's James Webb Space Telescope, focuses on a portion of the "Horse's Mane" that is about 0.8 light-years across. It was taken using a camera Webb's NIRCam (near-infrared camera) The airy clouds at the bottom of the image are dominated by cold molecular hydrogen. Red streaks extending above the main nebula represent mostly atomic hydrogen gas in this region, known as the photodissociation region and from nearby masses creates a mostly neutral region of gas and dust between the fully ionized gas above and the cooler nebula below. As in many Webb images, distant galaxies are scattered in the background. This image consists of light at wavelengths of 1.4 and 2.5 microns (shown in blue), 3.0 and -3.23 µm (cyan), 3.35 µm (green), 4.3 µm (yellow), and 4.7 and 4.05 µm (red). Credit: NASA, ESA, CSA, K. MISSELT (UNIVERSITY OF ARIZONA) and A. ABERGEL (IAS/UNIVERSITY PARIS-SACLAY, CNRS)

The Horsehead Nebula in unprecedented detail from the James Webb Space Telescope observations

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Photograph of the inner region of the Orion Nebula as viewed by the James Webb Space Telescope's NIRCam instrument. Rights: NASA, ESA, CSA, Data analysis and processing capability: PDRs4All ERS team; Graphic rendering by S. Fuenmayor

The James Webb Space Telescope reveals the unseen forces that shape planetary systems

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Researchers studying the Orion Nebula with the James Webb Space Telescope found that ultraviolet radiation from massive stars prevents the formation of giant planets in young systems by scattering their building materials.
The cover image chosen for the scientific journal CELL REPORTS - credit: image design Tsefnat Ozari and photography Avi Levin

Exposure to the sun's rays increases romantic desire in humans

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The researchers from Tel Aviv University discovered that exposure to the sun affects, among other things, the regulation of the sexual endocrine system (hormone secretion system) among humans.
Corona virus under purple light. Illustration: shutterstock

Turn on the light and kill the corona virus

Researchers from Tel Aviv University have proven that the corona virus can be killed efficiently, quickly and at low cost - using light emitting diodes (LED) in the ultraviolet (UV) range
Artist illustration of "The Living Mars" Illustration by Kevin Gill, NASA

What can climate change on Earth teach us about climate change we will cause on Mars?

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Illustration: The cover of the journal Molecular Cell which dedicated its cover page to Israeli research

Tanning has a biological clock

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algae. It still needs to be proven that platinum protects the human skin even outside the sterile laboratory. Photograph: Gugulethu Mhlanga.

Is the sunscreen of the future hiding in algae?

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The reindeer is preparing to shed its antlers. Photo: shutterstock

From the northern elk to Ein Biyonit

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Earth's magnetic field, composite of several NASA images. Photo: Christine Daniloff, MIT

Plasma plumes protect the Earth from the damaging solar storms

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The coldest place in the universe has been discovered. And what does this have to do with Einstein?

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sunburn. Illustration: shutterstock

Painful but less: blocking a molecule common in skin cells may solve the problem of pain from sunburn

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Blue and orange glow in response to purple lighting

A new family of light-emitting materials

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The properties of the phosphorus atom

A new method to discharge phosphorus by ultraviolet radiation

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Dr. Alex Lugovskoy and the Planetary Grinder (Credit: Public Relations - Ariel University Center)

Improving the capabilities of sunscreen through the modern incarnation of the mortar and pestle technology

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English ivy plant. Photo: University of Tennessee

Nanoparticles from the English ivy plant to improve sunscreens

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"By binding the 'combat head' molecule to the peptoid, we have shown that we can increase the protein's killing potential a thousandfold without requiring an expensive and lengthy optimization process," says Prof. Tom Kodadec

New substances to unload proteins

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Dr. Hadas Meman. Photo: Tel Aviv University

An innovative method for purifying drinking water

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