News tagged with ultraviolet radiation

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A microbe's trick for staying young

Researchers have discovered a microbe that stays forever young by rejuvenating every time it reproduces. The findings, published in Current Biology, provide fundamental insights into the mechanisms of aging.

Sep 12, 2013
4.7 / 5 (3) 0

Writing the history of the 'Cosmic Dark Ages'

For millions of years after the Big Bang, there were no stars, or even galaxies to contain stars. During these "Cosmic Dark Ages," neutral hydrogen gas dominated the universe. When clouds of primordial hydrogen ...

Sep 02, 2013
4.6 / 5 (13) 23 | with audio podcast

Hubble sees a cosmic caterpillar

(Phys.org) —This light-year-long knot of interstellar gas and dust resembles a caterpillar on its way to a feast. But the meat of the story is not only what this cosmic caterpillar eats for lunch, but also ...

Aug 29, 2013
4.6 / 5 (14) 3 | with audio podcast

Embracing Orion

(Phys.org) —This new view of the Orion A star-formation cloud from ESA's Herschel space observatory shows the turbulent region of space that hugs the famous Orion Nebula.

Aug 26, 2013
5 / 5 (6) 0 | with audio podcast

Ozone hole might slightly warm planet

A lot of people mix up the ozone hole and global warming, believing the hole is a major cause of the world's increasing average temperature. Scientists, on the other hand, have long attributed a small cooling ...

Aug 08, 2013
2.8 / 5 (6) 0 | with audio podcast

Dry run for the 2020 Mars mission

(Phys.org) —A film director looking for a location where a movie about Mars could be shot might consider the Atacama Desert, one of the harshest landscapes the planet has to offer. Due to the accidents ...

Jun 25, 2013
4.7 / 5 (9) 0 | with audio podcast

Pinwheeling across the sky

(Phys.org) —The face-on Pinwheel spiral galaxy is seen at ultraviolet wavelengths in this image taken by ESA's XMM-Newton space telescope.

Jun 11, 2013
3.7 / 5 (3) 1

Calculate your nitrogen footprint

Carbon footprints are a familiar way to assess how green your lifestyle is, but now you can also measure your nitrogen footprint using a new tool, the N-Calculator.

May 15, 2013
5 / 5 (1) 0