Tag Archives | sun

How UVA contributes to photoaging of skin

A study conducted by researchers at Boston University School of Medicine (BUSM) provides new evidence that longwave ultraviolet light (UVA) induces a protein that could result in premature skin aging. The findings demonstrate that aspects [...]

April 25, 2013

System Could Vaporize Asteroids That Threaten Earth

As an asteroid roughly half as large as a football field –– and with energy equal to a large hydrogen bomb –– readies for a fly-by of Earth on Friday, two California scientists are unveiling [...]

February 16, 2013

NASA’s SDO and STEREO Spot Something New On the Sun

One day in the fall of 2011, Neil Sheeley, a solar scientist at the Naval Research Laboratory in Washington, D.C., did what he always does – look through the daily images of the sun from [...]

April 9, 2012

Using many instruments to track a comet

In 16 years of data observations, the Solar Heliophysics Observatory (SOHO) — a joint European Space Agency and NASA mission — – made an unexpected claim for fame: the sighting of new comets at an alarming rate. SOHO has spotted over 2100 comets, mo…

December 14, 2011

The universe does think small

The biggest galaxies in the universe are elliptical galaxies. The largest of these hold over one trillion stars according to astronomical census takers, compared to 400 billion in our Milky Way. However, new research shows that elliptical galaxi…

December 1, 2010

NASA extends TIMED mission for fourth time

Nine years after beginning its unprecedented look at the gateway between Earth’s environment and space, not to mention collecting more data on the upper atmosphere than any other satellite, NASA’s Thermosphere Ionosphere Mesosphere Energetics an…

November 5, 2010

Surprising changes at solar boundary

When NASA launched the Interstellar Boundary Explorer (IBEX) on October 19, 2008, space physicists held their collective breath for never-before-seen views of a collision zone far beyond the planets, roughly 10 billion miles away. That’s [...]

September 30, 2010

Distant Star’s Sound Waves Reveal Cycle Similar to the Sun’s

In a bid to unlock longstanding mysteries of the Sun, including the impact on Earth of its 11-year cycle, an international team of scientists has successfully probed a distant star. By monitoring the star’s sound [...]

August 26, 2010