NASA’s next chief scientist: an former astronaut
NASA’s next head of its science programs: former astronaut John Grunsfeld.
NASA’s next head of its science programs: former astronaut John Grunsfeld.
Tag: science
NASA’s next chief scientist: an former astronaut
James Hansen and the corruption of science
A 70-million-year-old nest of fifteen baby dinosaurs has been found
A 70-million-year-old nest of fifteen baby dinosaurs has been found.
A 70-million-year-old nest of fifteen baby dinosaurs has been found.
The hunt for the “God Particle” enters the final stretch
The hunt for the “God Particle” enters the final stretch. And scientists might find it doesn’t exist!
The hunt for the “God Particle” enters the final stretch. And scientists might find it doesn’t exist!
Uncertainty rules the day
The press reports have been unanimous:
- Nature: Climate panel says prepare for weird weather
- Associated Press: Get ready for extreme weather
- The Guardian: Extreme weather will strike as climate change takes hold, IPCC warns
- Reuters: Extreme weather to worsen with climate change: IPCC
Unfortunately, if you read the actual IPCC panel summary report, you find that, though the majority of the press stories accurately describe the report’s worst scenarios and predictions, all of them downplay the most important point of the report, that the uncertainties are gigantic and that the influence of human activity on the increase or decrease of extreme weather for the next few decades will be inconsequential. To quote the report:
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An engineering prize to rival the Nobel
An engineering prize to rival the Nobel.
An engineering prize to rival the Nobel.
The CERN experiment that appeared to see faster-than-light neutrinos has repeated its results, except that not everyone on the team agrees
The uncertainty of science: The CERN experiment that appeared to see faster-than-light neutrinos has repeated its results, except that not everyone on the team agrees.
The new tests, completed 6 November, did away with the statistical analysis by splitting each pulse into bunches just 1- to 2-nanoseconds long, allowing each neutrino detected at Gran Sasso to be tied to a particular bunch produced at CERN. These tests were carried out over 10 days and provided 20 events. The researchers confirmed that the neutrinos arrived 60 nanoseconds early, with an uncertainty of about 10 nanoseconds, comparable to that of the initial result. The collaboration has also checked its original statistical analysis, but today’s decision to submit the results to a journal was not unanimous. “About four people” among the group of around 15 who did not sign the preprint have signed the journal submission, according to a source within the collaboration, while “four new people” have decided not to sign. That leaves the number of dissenters at about 15, compared with about 180 who did sign the journal submission.
The uncertainty of science: The CERN experiment that appeared to see faster-than-light neutrinos has repeated its results, except that not everyone on the team agrees.
The new tests, completed 6 November, did away with the statistical analysis by splitting each pulse into bunches just 1- to 2-nanoseconds long, allowing each neutrino detected at Gran Sasso to be tied to a particular bunch produced at CERN. These tests were carried out over 10 days and provided 20 events. The researchers confirmed that the neutrinos arrived 60 nanoseconds early, with an uncertainty of about 10 nanoseconds, comparable to that of the initial result. The collaboration has also checked its original statistical analysis, but today’s decision to submit the results to a journal was not unanimous. “About four people” among the group of around 15 who did not sign the preprint have signed the journal submission, according to a source within the collaboration, while “four new people” have decided not to sign. That leaves the number of dissenters at about 15, compared with about 180 who did sign the journal submission.
The giant storm on Saturn
Testimony at a House hearing yesterday suggests OMB plans to end NASA’s planetary program are true
Testimony at a House hearing yesterday, including the refusal of an OMB representative to appear, lend weight to the rumors that OMB plans to end NASA’s planetary program.
Testimony at a House hearing yesterday, including the refusal of an OMB representative to appear, lend weight to the rumors that OMB plans to end NASA’s planetary program.
Scientists have found evidence of a great lake below the surface of Europa
Scientists have found evidence for the existence of great shallow lakes below the surface of Europa.
Scientists have found evidence for the existence of great shallow lakes below the surface of Europa.
Is shooting down Phobos-Grunt an option?
Is shooting down Phobos-Grunt an option?
Is shooting down Phobos-Grunt an option?
Curing cancer using DNA and drugs
Curing cancer using DNA and drugs.
Curing cancer using DNA and drugs.
The Winds of Mars
Images taken 1363 days apart.
In two different papers published in two different journals in the past month, scientists have concluded that — despite the thinness of the planet’s atmosphere — the dunes and sands of Mars are being continually shaped and changed by its winds. In both papers the data from which this conclusion was drawn came from high resolution images taken by the HiRISE camera on Mars Reconnaissance Orbiter.
What is especially interesting about this conclusion is that the climate models that had been developed for the Martian atmosphere, combined with wind measurements gathered by the various Martian landers, had all suggested that the kind of strong winds necessary to move sand were rare. To quote the abstract of the paper published on Monday in the journal Geology, Bridges, et al,
Prior to Mars Reconnaissance Orbiter data, images of Mars showed no direct evidence for dune and ripple motion. This was consistent with climate models and lander measurements indicating that winds of sufficient intensity to mobilize sand were rare in the low-density atmosphere.
Similarly, the second paper, Silvestro, et al, published on October 22 in Geophysical Research Letters, stated that
results from wind tunnel simulations and atmospheric models show that such strong wind events should be rare in the current Martian atmospheric setting.
Yet, both studies found significant evidence that such winds do occur on Mars, and are moving sand in many different places.
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Congress has slashed the budget of John Holdren’s White House Science Office
The Senate/House final deal for the White House Science Office has slashed its budget by one third.
Frustrated that White House officials [i.e. John Holdren] have ignored congressional language curtailing scientific collaborations with China, legislators have decided to get their attention through a 32% cut in the tiny budget of the Office of Science and Technology Policy (OSTP).
See this story for more background.
The Senate/House final deal for the White House Science Office has slashed its budget by one third.
Frustrated that White House officials [i.e. John Holdren] have ignored congressional language curtailing scientific collaborations with China, legislators have decided to get their attention through a 32% cut in the tiny budget of the Office of Science and Technology Policy (OSTP).
See this story for more background.
NASA extends Messenger mission at Mercury one year
No surprise here: NASA has extended the Messenger mission at Mercury for one more year.
No surprise here: NASA has extended the Messenger mission at Mercury for one more year.
Bronze artifact found in Alaska
A bronze artifact, resembling the remains of a buckle and a thousand years older than the house being excavated, has been found by archeologists in Alaska.
One Asia archaeologist suggested the piece may have been part of a harness or horse ornament. The researchers are looking for an East Asia expert to confer with on the bronze piece. Mason said it’s not likely the bronze piece was washed ashore after being dropped by a Russian explorer or a whaler. “That’s totally unlikely, in fact nearly impossible, considering where it is,” he said.
A bronze artifact, resembling the remains of a buckle and a thousand years older than the house being excavated, has been found by archeologists in Alaska.
One Asia archaeologist suggested the piece may have been part of a harness or horse ornament. The researchers are looking for an East Asia expert to confer with on the bronze piece. Mason said it’s not likely the bronze piece was washed ashore after being dropped by a Russian explorer or a whaler. “That’s totally unlikely, in fact nearly impossible, considering where it is,” he said.
The Mystery of the Lunar Ionosphere
The mystery of the Moon’s ionosphere.
The mystery of the Moon’s ionosphere.
Gold plated interstellar clouds, sprayed by supernovae
Russian space agency head says there is still a chance to save Phobos-Grunt
The head of the Russian space agency said yesterday that there is still a chance to save Phobos-Grunt.
“The probe is going to be in orbit until January, but in the first days of December the window will close” to re-programme it, he told Russian news agencies at Russia’s Baikonur cosmodrome in Kazakhstan.
He also said that the probe will not pose a threat, and will burn up in the atmosphere if it should fall to Earth.
The head of the Russian space agency said yesterday that there is still a chance to save Phobos-Grunt.
“The probe is going to be in orbit until January, but in the first days of December the window will close” to re-programme it, he told Russian news agencies at Russia’s Baikonur cosmodrome in Kazakhstan.
He also said that the probe will not pose a threat, and will burn up in the atmosphere if it should fall to Earth.
Scientists have released a new 28 frame movie of asteroid 2005 YU55
Scientists have released a new 28 frame movie of asteroid 2005 YU55, created as the asteroid zipped past the Earth this past week.
Scientists have released a new 28 frame movie of asteroid 2005 YU55, created as the asteroid zipped past the Earth this past week.
Toxic Russian Mars probe aims for Earth
It now looks like the stranded and toxic Russian Mars probe, Phobos-Grunt, is likely aimed at Earth.
We are looking at an uncontrolled toxic reentry scenario. Phobos-Grunt . . . is fully-laden with unsymmetrical dimethylhydrazine and nitrogen tetroxide; that’s ten tons of fuel and oxidizer. The probe itself weighs-in at only three tons. . . . Phobos-Grunt’s batteries are draining and its orbit is degrading. It looks as if the probe will reenter later this month/early December. NORAD is putting a Nov. 26 reentry date on Phobos-Grunt.
It now looks like the stranded and toxic Russian Mars probe, Phobos-Grunt, is likely aimed at Earth.
We are looking at an uncontrolled toxic reentry scenario. Phobos-Grunt . . . is fully-laden with unsymmetrical dimethylhydrazine and nitrogen tetroxide; that’s ten tons of fuel and oxidizer. The probe itself weighs-in at only three tons. . . . Phobos-Grunt’s batteries are draining and its orbit is degrading. It looks as if the probe will reenter later this month/early December. NORAD is putting a Nov. 26 reentry date on Phobos-Grunt.
Supernova may have kicked off solar system
A supernova may have kicked off the birth of our sun.
I have a article awaiting publication at Sky & Telescope on this same subject, though my piece also asks the question: What was the star cluster like in which the sun formed? And can we find that star cluster today?
A supernova may have kicked off the birth of our sun.
I have a article awaiting publication at Sky & Telescope on this same subject, though my piece also asks the question: What was the star cluster like in which the sun formed? And can we find that star cluster today?
New data says scientists must look underground for life on Mars
New data says scientists must look underground for life on Mars.
New data says scientists must look underground for life on Mars.
Are cows magnetic?
The uncertainty of science: Are cows magnetic?
The uncertainty of science: Are cows magnetic?
The fastest spinning normal star
Astronomers find the fastest spinning normal star.
Astronomers find the fastest spinning normal star.
Astronomers find clouds of primordial gas from the early universe
Astronomers find clouds of primordial gas from the early universe.
And in related news, a new computer simulation suggests that the very first stars were not the giant monsters scientists had predicted.
Astronomers find clouds of primordial gas from the early universe.
And in related news, a new computer simulation suggests that the very first stars were not the giant monsters scientists had predicted.
New data suggests that the asteroid Lutetia is a Rare Survivor from the Birth of the Earth
A new analysis of data suggests that the asteroid Lutetia is a leftover fragment from the same original material that formed the Earth, Venus and Mercury.
A new analysis of data suggests that the asteroid Lutetia is a leftover fragment from the same original material that formed the Earth, Venus and Mercury.
How much does the internet weigh?
The New Madrid fault might be turning off
According to GPS data gathered over the past two decades, it appears that the New Madrid fault in Missouri might be shutting down.
According to GPS data gathered over the past two decades, it appears that the New Madrid fault in Missouri might be shutting down.
Disgraced Dutch Pyschologist Returns Doctoral Degree
The Dutch scientists who faked the data on dozens of papers has given up his doctoral degree.
The Dutch scientists who faked the data on dozens of papers has given up his doctoral degree.