Dawn has begun its final if slow approach to the asteroid Vesta
Dawn has begun its final if slow approach to the asteroid Vesta.
Dawn has begun its final if slow approach to the asteroid Vesta.
Tag: science
Dawn has begun its final if slow approach to the asteroid Vesta
Indian scientists about to start drilling five mile deep borehole
Indian scientists are about to begin drilling a five-mile-deep borehole to study earthquakes.
Indian scientists are about to begin drilling a five-mile-deep borehole to study earthquakes.
Did Apollo 12 bring back a microbe from Surveyor 3?
Did a microbe survive 2.5 years attached to Surveyor 3 on the Moon, and then come home on Apollo 12? New research says no.
Did a microbe survive 2.5 years attached to Surveyor 3 on the Moon, and then come home on Apollo 12? New research says no.
More info on the asteroid “flyby” of Earth this coming November 8
More information on the asteroid “flyby” of Earth this coming November 8.
“On November 8, asteroid 2005 YU55 will fly past Earth and at its closest approach point will be about 325,000 kilometers [201,700 miles] away,” said Don Yeomans, manager of NASA’s Near-Earth Object Program Office at the Jet Propulsion Laboratory in Pasadena, Calif. “This asteroid is about 400 meters [1,300 feet] wide – the largest space rock we have identified that will come this close until 2028.”
More information on the asteroid “flyby” of Earth this coming November 8.
“On November 8, asteroid 2005 YU55 will fly past Earth and at its closest approach point will be about 325,000 kilometers [201,700 miles] away,” said Don Yeomans, manager of NASA’s Near-Earth Object Program Office at the Jet Propulsion Laboratory in Pasadena, Calif. “This asteroid is about 400 meters [1,300 feet] wide – the largest space rock we have identified that will come this close until 2028.”
Hubble and Swift show that asteroid debris came from collision
Space telescopes Hubble and Swift have proven that the debris that suddenly surrounded asteroid Scheila last year was caused by a collision.
Space telescopes Hubble and Swift have proven that the debris that suddenly surrounded asteroid Scheila last year was caused by a collision.
Are astronomers finally going to push for a replacement for Hubble?
Astronomers are considering the merger two space missions to create a new optical/ultraviolet space telescope. The mission would be designed to do both deep cosmology and exoplanet observations.
The two communities would both like to see a 4–8-metre telescope in space that would cost in excess of $5 billion. “Our interests are basically aligned,” says [Jim Kasting, a planetary scientist at Pennsylvania State University]. Such a mission would compete for top billing in the next decadal survey of astronomy by the US National Academy of Sciences, due in 2020.
This story is big news, as it indicates two things. First, the 2010 Decadal Survey, released in August 2010, is almost certainly a bust. The budget problems at NASA as well as a general lack of enthusiasm among astronomers and the public for its recommendations mean that the big space missions it proposed will almost certainly not be built.
» Read more
The little solar sail that could!
The $23-Million Textbook
One of the largest statues of an Egyptian pharaoh unearthed in Luxor
One of the largest statues of an Egyptian pharaoh ever found has been unearthed in Luxor.
One of the largest statues of an Egyptian pharaoh ever found has been unearthed in Luxor.
SETI suspends operations
Out of funds, SETI has suspended operations while it looks for new investors.
Out of funds, SETI has suspended operations while it looks for new investors.
Japan’s tsunami waves top historic heights
Japan’s tsunami in March produced the largest waves in history.
Some waves grew to more than 100 feet high, breaking historic records, as they squeezed between fingers of land surrounding port towns.
To me, however, this is the biggest takeaway:
Although terrible, the preliminary estimate also finds a better-than 92% survival rate for people living in coastal towns hit by the waves, Bourgeois says. “In that sense, given the magnitude of the unexpectedly large earthquake, things could have been even worse,” she says.
Japan’s tsunami in March produced the largest waves in history.
Some waves grew to more than 100 feet high, breaking historic records, as they squeezed between fingers of land surrounding port towns.
To me, however, this is the biggest takeaway:
Although terrible, the preliminary estimate also finds a better-than 92% survival rate for people living in coastal towns hit by the waves, Bourgeois says. “In that sense, given the magnitude of the unexpectedly large earthquake, things could have been even worse,” she says.
World’s smelliest flower opens for the first time in 75 years
The world’s smelliest flower has bloomed for the first time in 75 years.
The world’s smelliest flower has bloomed for the first time in 75 years.
U.S. Forest Service closes more caves
An excellent editorial on the U.S. Forest Service’s decision to shutter more caves. Key quote:
The closures . . . seem like an overreaching government solution to a problem that doesn’t exist. The Forest Service could certainly be spending its time in more constructive ways – like taking public comment on the “emergency” closures, which are set to start May 1.
An excellent editorial on the U.S. Forest Service’s decision to shutter more caves. Key quote:
The closures . . . seem like an overreaching government solution to a problem that doesn’t exist. The Forest Service could certainly be spending its time in more constructive ways – like taking public comment on the “emergency” closures, which are set to start May 1.
Observations of Comet Hale-Bopp at 30 AU
In a paper published tonight on the Los Alamos astro-ph preprint website, astronomers described new observations of Comet Hale-Bopp at a distance of 30 astronomical units, or 2.8 billion miles, from the sun. Their conclusions:
- These observations were the most distant detection of any known comet.
- The comet’s starlike appearance and its drop in brightness since the last observations suggest that the comet has finally ceased, or is about to cease, all activity, and that they are now looking directly at the comet’s nucleus instead of the coma cloud surrounding it.
- Nonetheless, the comet is brighter than expected, which also suggests that a thin layer of new ice covers its surface and thus increases its albedo.
To quote the paper, “Observing Hale-Bopp in a completely frozen state would be extremely important because a thick coma was constantly present during the entire appariation [Ed. the fly-by of the Sun]. The coma obscured the nucleus which was not observed directly. Lack photometric data of the bared nucleus, its size — one of the most important input parameter in activity models — remains uncertain.”
Will fewer humans in space lead to more robot explorers?
Eric Berger at the Houston Chronicle asks: Will fewer humans in space lead to more robot explorers?
In a word, no. In the past fifty years, every time the budget of the manned space program has been cut, the unmanned program shrank as well. And every time the budget of manned space grew, so did the budget for unmanned missions.
Eric Berger at the Houston Chronicle asks: Will fewer humans in space lead to more robot explorers?
In a word, no. In the past fifty years, every time the budget of the manned space program has been cut, the unmanned program shrank as well. And every time the budget of manned space grew, so did the budget for unmanned missions.
Harvard Researcher Banned From Teaching Next Year
A Harvard researcher, under investigation for research misconduct, has been banned from teaching next year.
A Harvard researcher, under investigation for research misconduct, has been banned from teaching next year.
Scientists find previously unknown deposits of CO2 on Mars
Scientists find a gigantic and previously unknown deposit of CO2 at Mars’ south pole.
“We already knew there is a small perennial cap of carbon-dioxide ice on top of the water ice there, but this buried deposit has about 30 times more dry ice than previously estimated,” said Roger Phillips of Southwest Research Institute in Boulder, Colo. Phillips is deputy team leader for the Mars Reconnaissance Orbiter’s Shallow Radar instrument and lead author of the report. . . . “When you include this buried deposit, Martian carbon dioxide right now is roughly half frozen and half in the atmosphere, but at other times it can be nearly all frozen or nearly all in the atmosphere,” Phillips said.
What this discovery means is that, depending on Mars’ orbital circumstances, its atmosphere can sometimes be dense enough for liquid water to flow on its surface.
Scientists find a gigantic and previously unknown deposit of CO2 at Mars’ south pole.
“We already knew there is a small perennial cap of carbon-dioxide ice on top of the water ice there, but this buried deposit has about 30 times more dry ice than previously estimated,” said Roger Phillips of Southwest Research Institute in Boulder, Colo. Phillips is deputy team leader for the Mars Reconnaissance Orbiter’s Shallow Radar instrument and lead author of the report. . . . “When you include this buried deposit, Martian carbon dioxide right now is roughly half frozen and half in the atmosphere, but at other times it can be nearly all frozen or nearly all in the atmosphere,” Phillips said.
What this discovery means is that, depending on Mars’ orbital circumstances, its atmosphere can sometimes be dense enough for liquid water to flow on its surface.
“Space beer,” one giant leap for mankind
“For example, many metals burn more easily in reduced gravity, liquids behave differently, both of which have important implications for safety and the way machinery and equipment operate in spacecraft and space stations. The beer experiments assisted in determining the correct level of carbonation, so that it can in the future be appropriately enjoyed by humans in reduced gravity,”
“For example, many metals burn more easily in reduced gravity, liquids behave differently, both of which have important implications for safety and the way machinery and equipment operate in spacecraft and space stations. The beer experiments assisted in determining the correct level of carbonation, so that it can in the future be appropriately enjoyed by humans in reduced gravity,”
Saturn and Enceladus linked by electricity
Saturn and Enceladus linked by electricity.
Saturn and Enceladus linked by electricity.
Global warming advocate discovers that anti-nuclear activists lie!
Confusion in the environmentalism movement: A global warming activist discovers that anti-nuclear activists lie!
Confusion in the environmentalism movement: A global warming activist discovers that anti-nuclear activists lie!
Sift through Kepler data and find exoplanets
Got some spare time for original science? Volunteers wanted to sift through the Kepler data to find exoplanets.
Got some spare time for original science? Volunteers wanted to sift through the Kepler data to find exoplanets.
Pluto’s atmosphere is expanding, and scientists don’t know why
Pluto’s atmosphere is expanding, and scientists don’t know why.
Pluto travels along a highly elliptical path and last passed closest to the sun in 1989. Many planetary scientists expected the atmosphere to shrink as the icy orb began receding from the sun’s warmth. The unanticipated expansion may be related to changes in the darkness of the orb’s surface a decade or so ago, which may have caused the surface ices to absorb more solar radiation and more efficiently evaporate. Or, Greaves suggests, long-term variations in the sun’s ultraviolet output, changes linked to the roughly 11-year cycle of solar activity, may be playing a role.
Pluto’s atmosphere is expanding, and scientists don’t know why.
Pluto travels along a highly elliptical path and last passed closest to the sun in 1989. Many planetary scientists expected the atmosphere to shrink as the icy orb began receding from the sun’s warmth. The unanticipated expansion may be related to changes in the darkness of the orb’s surface a decade or so ago, which may have caused the surface ices to absorb more solar radiation and more efficiently evaporate. Or, Greaves suggests, long-term variations in the sun’s ultraviolet output, changes linked to the roughly 11-year cycle of solar activity, may be playing a role.
Medicine in space does not have the right stuff
Medicine in space does not have the right stuff.
After 28 months, the medication stored in space generally had a lower potency and degraded faster than those stored on the ground. Six medications on the space station underwent physical changes, such as discoloration and liquefaction, while such changes only occurred in two medications stored on the ground.
Medicine in space does not have the right stuff.
After 28 months, the medication stored in space generally had a lower potency and degraded faster than those stored on the ground. Six medications on the space station underwent physical changes, such as discoloration and liquefaction, while such changes only occurred in two medications stored on the ground.
Could black trees blossom in a world with two suns?
Federal funding for IPCC back in budget
The pigs win: Funding for the IPCC restored to budget in 2011 budget deal.
The pigs win: Funding for the IPCC restored to budget in 2011 budget deal.
Congress removes wolf from endangered list
Congress removes the wolf from the endangered list. From Senator Jon Tester (D-Montana):
“Right now, Montana’s wolf population is out of balance and this provision will get us back on the responsible path with state management. Wolves have recovered in the Northern Rockies. By untying the hands of the Montana biologists who know how to keep the proper balance, we will restore healthy wildlife populations and we will protect livestock. This provision is best for our wildlife, our livestock and for wolves themselves.”
I don’t know if Tester’s description of the situation in Montana is accurate (though I tend to rely on local expertise in these matters). However, to get an opposing viewpoint the article above goes to the Center for Biological Diversity, an organization I do know something about. In caving matters relating to white nose syndrome, CBD has pushed extremist and outright ignorant policy positions (trying for example to have all caves and mines on all public lands closed in order to protect bats, even though there is literally no evidence that such an action made sense). I would not trust their opinions under any condition.
Congress removes the wolf from the endangered list. From Senator Jon Tester (D-Montana):
“Right now, Montana’s wolf population is out of balance and this provision will get us back on the responsible path with state management. Wolves have recovered in the Northern Rockies. By untying the hands of the Montana biologists who know how to keep the proper balance, we will restore healthy wildlife populations and we will protect livestock. This provision is best for our wildlife, our livestock and for wolves themselves.”
I don’t know if Tester’s description of the situation in Montana is accurate (though I tend to rely on local expertise in these matters). However, to get an opposing viewpoint the article above goes to the Center for Biological Diversity, an organization I do know something about. In caving matters relating to white nose syndrome, CBD has pushed extremist and outright ignorant policy positions (trying for example to have all caves and mines on all public lands closed in order to protect bats, even though there is literally no evidence that such an action made sense). I would not trust their opinions under any condition.
An asteroid that winks
An asteroid that winks.
An asteroid that winks.
Liquefaction
The real disaster in Japan continues: Liquefaction.
The real disaster in Japan continues: Liquefaction.
The WISE space telescope results go online
The WISE infrared space telescope results are now online, for anyone to search.
Data from the first 57 percent of the sky surveyed is accessible through an online public archive. The complete survey, with improved data processing, will be made available in the spring of 2012. A predecessor to WISE, the Infrared Astronomical Satellite (IRAS), served a similar role about 25 years ago, and those data are still valuable to astronomers today. Likewise, the WISE legacy is expected to endure for decades.
You can hunt for new asteroids, comets, and galaxies here, with instructions on how to do it here.
The WISE infrared space telescope results are now online, for anyone to search.
Data from the first 57 percent of the sky surveyed is accessible through an online public archive. The complete survey, with improved data processing, will be made available in the spring of 2012. A predecessor to WISE, the Infrared Astronomical Satellite (IRAS), served a similar role about 25 years ago, and those data are still valuable to astronomers today. Likewise, the WISE legacy is expected to endure for decades.
You can hunt for new asteroids, comets, and galaxies here, with instructions on how to do it here.
The squeals at NOAA
The pig squeals at NOAA: The agency’s administrator told Congress yesterday that the 2011 budget deal will cause great harm to weather monitoring.
Note that NOAA is getting $4.5 billion in the 2011 budget, $700 million more than the weather agency got in 2008.
Only in Washington is a budget increase of almost 20 percent in three years called a draconian cut.
The pig squeals at NOAA: The agency’s administrator told Congress yesterday that the 2011 budget deal will cause great harm to weather monitoring.
Note that NOAA is getting $4.5 billion in the 2011 budget, $700 million more than the weather agency got in 2008.
Only in Washington is a budget increase of almost 20 percent in three years called a draconian cut.