Alien

‘Runaway greenhouse’ easier to trigger on Earth than thought, study says

Publication: NBC News   Date: July 28, 2013   View Article

It’s plausible that conditions on Earth could get so hot and steamy that the oceans entirely evaporate and render the planet inhospitable to life, according to new calculations that suggest this so-called runaway greenhouse is easier to initiate than previously believed.

“We could go into the runaway greenhouse today if we could get the planet hot enough to get enough water vapor into the atmosphere,” Colin Goldblatt, a professor of Earth system evolution at the University of Victoria in British Columbia, Canada, and lead author of the study, told NBC News.

The reality, though, he said, is that burning all the planet’s fossil fuels such as oil and coal is “very unlikely” to trigger the uncontrollable warming.

First Truly Habitable Planet Discovered, Experts Say

Publication: National Geographic News   Date: September 29, 2010   View Article

Astronomers studying a nearby star say they’ve found the first potentially habitable planet—likely a rocky place with an atmosphere, temperate regions, and crucially, liquid water, considered vital for life as we know it.

Other extrasolar planets have been called Earthlike, but, astronomer Paul Butler assured, “this is really the first Goldilocks planet”—not too hot, not too cold.

SETI: 50 years of searching for ET

Publication: MSNBC.com   Date: April 26, 2010   View Article

Somewhere out there, alien civilizations might be communicating with each other. They might even be trying to contact us. Fifty years ago, this reasoning compelled astronomer Frank Drake to point a radio telescope at the stars and listen for chatter. He didn’t hear E.T. calling us, calling home, or calling anywhere else during his four-month-long experiment at the National Radio Astronomy Observatory in Green Bank, W.Va., but the effort officially kicked off what is known as SETI, the search for extraterrestrial intelligence.

UFO cases that generate buzz

Publication: MSNBC.com   Date: January 18, 2010   View Article

UFO investigators see references to rocket ships, aliens and astronauts that go back to the days when humans first put chisel and paintbrush to rock. More than 6,000 years later, objects that are unidentified — at least at first — continue to appear in the skies and generate buzz.

6 signs that aliens might exist

Publication: MSNBC.com   Date: December 11, 2008   View Article

Do aliens exist? Explore the evidence — from the scientifically plausible to the incredible — suggesting that we may not be alone in the universe.

“Hot Ice” Planet Discovered, Covered in “Solid Water,” Experts Say

Publication: National Geographic News   Date: May 17, 2007   View Article

A Neptune-size planet likely covered in hot—but solid—water has been discovered in a snug orbit around a nearby star, a team of astronomers announced today.

While this planet is not fit for life, the finding suggests astronomers may soon detect habitable planets in similar alien solar systems, said Michaël Gillon of the University of Liège in Belgium.

Distant Planets Could Have Plants of “Alien” Colors

Publication: National Geographic News   Date: April 12, 2007   View Article

Scientists may be able to determine the color of extraterrestrial plant life while studying distant planets, according to a pair of new studies.

Researchers have developed a way to analyze the light emitted by a given planet’s parent star and determine how that light interacts with various chemicals in the planet’s atmosphere.

© 2008-2010 Collected Writings By John Roach