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NASA has set the interwebs a-tremble with a teasing announcement to the global media that a news conference will be held in Washington DC on Thursday "to discuss an astrobiology finding that will impact the search for evidence of extraterrestrial life". The space agency's routine ploy of trailing major briefings in advance has caused trouble before. In 2008, "revelations" that the White House had been informed of a NASA announcement's content before the media caused fevered speculation ahead of a briefing on data from the "Phoenix" polar Mars lander.

MEDIA ADVISORY : M10-167 NASA Sets News Conference on Astrobiology Discovery; Science Journal Has Embargoed Details Until 2 p.m. EST On Dec. 2 WASHINGTON -- NASA will hold a news conference at 2 p.m. EST on Thursday, Dec. 2, to discuss an astrobiology finding that will impact the search for evidence of extraterrestrial life. Astrobiology is the study of the origin, evolution, distribution and future of life in the universe. The news conference will be held at the NASA Headquarters auditorium at 300 E St. SW, in Washington. It will be broadcast live on NASA Television and streamed on the...

Forests might be detectable on extrasolar planetsThanks to a new remote sensing technique, astronomers may soon be able to detect the presence of multicellular life (like trees) on planets outside of the Solar System. Excitingly, we've been able to detect the composition of atmospheres on a handful of planets orbiting other stars. But if next-generation space observatories go online within the next couple of decades, some scientists propose using a new technique to determine details such as tree-like multicellular life on extrasolar planets. While previous studies have discussed the likelihood of detecting life on exoplanets through signs of biogenic gases...

Thirty years ago, NASA scientists noticed that two of their spacecraft, Pioneer 10 and Pioneer 11, were veering off course slightly, as if subject to a mysterious, unknown force. In 1998, the wider scientific community got wind of that veering—termed the Pioneer anomaly—and took aim at it with incessant, mind-blowingly detailed scrutiny that has since raised it to the physics equivalent of cult status. Now, though, after spawning close to 1000 academic papers, numerous international conferences, and many entire scientific careers, this beloved cosmic mystery may be on its way out. Slava Turyshev, a scientist at the Jet Propulsion Laboratory...

Harry Potter fans are looking forward to the boy wizard’s next screen adventure, when Harry Potter and the Half-Blood Prince opens this month. Pottermania broke loose when J. K. Rowling’s first book appeared on bookstands in 1997, prompting the creation of films, fan websites, and dozens of similarly themed books. Rowling’s world of wizardry has even inspired the name of a dinosaur fossil, Dracorex hogwartsia. But serious researchers are seeing evidence that dragons were more than just fantastical creatures...

In September I participated in "Pale Blue Dot III: Searching for Life on Distant Words" at Chicago's Adler Planetarium. The other two Pale Blue Dot workshops were held in 1996 and 1999, both at NASA Ames Research Center. It is striking how much the world, and the worlds, have changed since then. Over 200 extrasolar planets have been discovered, and the Mars Exploration Rovers have shown evidence of surface water on another planet... The sessions each featured three scientific talks, and then a "media respondent" would present a journalist's perspective. Afterwards there would be a panel discussion, with the scientists...

Questions about the existence of life in outer space may have a surprisingly close-to-home answer, according to one University of Houston professor. Understanding how life evolved on Earth is important in obtaining clues as to where else in the universe one might find life and what it might be like, said George E. Fox, a UH professor of biology and biochemistry. Fox is finishing work on a three-year research grant from NASA’s Exobiology Program that seeks to understand life’s origin. In addition to his Earth-based research, Fox collaborated with the Houston Museum of Natural Science (HMNS) on a film project...

Are We Alone? A Tête-à-Tête Between Neil deGrasse Tyson and Peter Ward Despite decades of concerted effort by radio astronomers working on the project known as SETI, the Search for Extraterrestrial Intelligence, we've had no sign of beings elsewhere in the universe that match or exceed us in smarts. That's just one of many pieces of evidence that paleontologist Peter Ward, coauthor of Rare Earth: Why Complex Life is Uncommon in the Universe, points to when claiming that intelligent life beyond Earth must be exceedingly rare. Since many other scientists believe advanced life is common out there—Carl Sagan estimated...