News tagged with ultraviolet radiation

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Review: 3 weather phone apps help you on the go

(AP)—For me, climate change is a serious issue. No, I'm not referring to the debate over global warming. My concerns are much simpler. I'm constantly checking the weather for the hours and days ahead because ...

Dec 05, 2012
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A new class of extragalactic objects

A blazar is a galaxy with an intensely bright central nucleus containing a supermassive black hole, much like a quasar. The difference is that a blazar can emit light with extremely high energy gamma rays ...

Oct 29, 2012
3.9 / 5 (14) 1

The Helix nebula: Bigger in death than life

(Phys.org)—A dying star is refusing to go quietly into the night, as seen in this combined infrared and ultraviolet view from NASA's Spitzer Space Telescope and the Galaxy Evolution Explorer (GALEX), which ...

Oct 04, 2012
3.5 / 5 (2) 2

The rich colors of a cosmic seagull (w/ video)

(Phys.org)—This new image from ESO's La Silla Observatory shows part of a stellar nursery nicknamed the Seagull Nebula. This cloud of gas, formally called Sharpless 2-292, seems to form the head of the ...

Sep 26, 2012
3.7 / 5 (3) 1

A surprisingly bright superbubble

(Phys.org)—This composite image shows a superbubble in the Large Magellanic Cloud (LMC), a small satellite galaxy of the Milky Way located about 160,000 light years from Earth.

Aug 30, 2012
5 / 5 (3) 4

Strawberry extract protects against UVA rays

An experiment has shown that strawberry extract added to skin cell cultures acts as a protector against ultraviolet radiation as well as increasing its viability and reducing damage to DNA. Developed by a ...

Aug 03, 2012
4 / 5 (1) 0