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Posts by
Jorge Salazar
Lightweight failed stars measured by astronomers
Astronomer Michael Liu talks about the most lightweight stellar objects found outside our solar system. It's a pair of brown dwarfs, sometimes called 'failed stars' because they lack enough mass to sustain the nuclear reactions that let stars like our sun light up.
August 10, 2008
Hinode satellite sees August 1, 2008, eclipse
August 1, 2008. Today is an eclipse day - a total solar eclipse - where the moon's dark shadow sweeps across Earth. EarthSky asked NASA senior astronomer Sten Odenwald of the Goddard Space Flight Center for more.
August 1, 2008
Hinode orbiting observatory studies the sun
The Hinode mission is going to tell us much about how the atmosphere of the sun is produced and how it evolves, says solar physicist George Doschek. Hear more about Hinode, a space observatory pointed at our sun.
July 28, 2008
Robots replace animals in toxicology testing?
A new method for toxicity testing - employing robots - could one day make the need for lab animals obsolete. Read more about how robots replace animals.
July 23, 2008
Saturn recycles its rings, creates new ones
In the 1970s, Voyager 1 provided the first close-up views of Saturn's rings, and determined that the rings formed about 100 million years ago. But evidence from the more recent Cassini mission suggests the rings are much older. Read more about how Saturn recycles its rings.
July 16, 2008
Oil demand: Recovering viscous, hard-to-get oil
Vinegar talks about a new, more eco-friendly oil recovery process that uses giant underground heaters to help thick, old oil flow more freely.
July 14, 2008
Why is Earth the only planet with living things?
Nina Amatulli, in the second grade at The American School in Japan, asks the scientists why Earth is the only place with life. Hear the response from Robert Hazen of the Carnegie Institution For Science.
July 7, 2008
Life-seeking robot and Europa’s ice with Peter Doran
A life-seeking robot being tested now in Antarctica might someday be used to find signs of life on other worlds, such as on Europa. Read more.
June 27, 2008
People want to know how life started
John Mather talks about the James Webb Telescope. It should help answer many questions people want to know about the universe. Read more.
June 19, 2008
Dark energy and the expansion of the universe
More than 70 percent of all energy in our universe is thought to be dark energy. But - though theoretical models say it should exist - astronomers have yet to detect dark energy. How astronomers are trying to solve one of the greatest scientific mysteries of our time.
June 6, 2008
