A trio of twisters captured on Mars in a single image.
A trio of twisters captured on Mars in a single image.
A trio of twisters captured on Mars in a single image.
Author: Robert Zimmerman
A trio of twisters captured on Mars in a single image.
A space tug to bring secondary commercial payloads to different orbits.
The commercial space industry continues to heat up: A space tug to bring secondary commercial payloads to different orbits.
The commercial space industry continues to heat up: A space tug to bring secondary commercial payloads to different orbits.
Richard Rogers – Edelweiss
An evening pause: From The Sound of Music (1965). The context: The Nazis have taken over Austria, and plan to arrest Captain Georg Ludwig von Trapp and his family at the end of this concert. This lovely song, Edelweiss, is initially sung by von Trapp as a farewell to his nation. As the song unfolds, however, it becomes instead a song of defiance against the Nazis, by the von Trapps and the audience.
Always, always, we must stand for freedom.
The Sun fizzles in April
NOAA’s Space Weather Prediction Center today posted its monthly update of the ongoing sunspot cycle of the Sun. I have posted the new graph for April below the fold.
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Astronomers now believe that Type 1a supernovae — used to discover dark energy — can be produced in two different ways.
The uncertainty of science: Astronomers now believe that Type 1a supernovae — used to discover dark energy — can be produced in two different ways.
Type Ia supernovae are known to originate from white dwarfs – the dense cores of dead stars. White dwarfs are also called degenerate stars because they’re supported by quantum degeneracy pressure. In the single-degenerate model for a supernova, a white dwarf gathers material from a companion star until it reaches a tipping point where a runaway nuclear reaction begins and the star explodes. In the double-degenerate model, two white dwarfs merge and explode. Single-degenerate systems should have gas from the companion star around the supernova, while the double-degenerate systems will lack that gas.
For astronomers, this possibility raises several conflicting questions. If two different causes produce Type 1a supernovae, could their measurement of dark energy be suspect? And if not, why is it that these two different causes produce supernovae explosions that look so much alike?
The uncertainty of science: Astronomers now believe that Type 1a supernovae — used to discover dark energy — can be produced in two different ways.
Type Ia supernovae are known to originate from white dwarfs – the dense cores of dead stars. White dwarfs are also called degenerate stars because they’re supported by quantum degeneracy pressure. In the single-degenerate model for a supernova, a white dwarf gathers material from a companion star until it reaches a tipping point where a runaway nuclear reaction begins and the star explodes. In the double-degenerate model, two white dwarfs merge and explode. Single-degenerate systems should have gas from the companion star around the supernova, while the double-degenerate systems will lack that gas.
For astronomers, this possibility raises several conflicting questions. If two different causes produce Type 1a supernovae, could their measurement of dark energy be suspect? And if not, why is it that these two different causes produce supernovae explosions that look so much alike?
Massachusetts state officials are restricting the kinds of foods that can be sold at bake sales.
We’re here to help you: Massachusetts state officials are restricting the kinds of foods that can be sold at bake sales.
Bake sales, the calorie-laden standby cash-strapped classrooms, PTAs and booster clubs rely on, will be outlawed from public schools as of Aug. 1 as part of new no-nonsense nutrition standards, forcing fundraisers back to the blackboard to cook up alternative ways to raise money for kids.
We’re here to help you: Massachusetts state officials are restricting the kinds of foods that can be sold at bake sales.
Bake sales, the calorie-laden standby cash-strapped classrooms, PTAs and booster clubs rely on, will be outlawed from public schools as of Aug. 1 as part of new no-nonsense nutrition standards, forcing fundraisers back to the blackboard to cook up alternative ways to raise money for kids.
Scientists have found that a solar Grand Minimum 2800 years ago might have caused a period of cooling in Europe
Scientists have found that a solar Grand Minimum 2800 years ago might have caused a period of cooling in Europe.
The evidence for this link is at this moment slim, based upon a single data point from a lake in Germany. Nonetheless, it is further evidence that the Sun’s production of sunspots is more important to global climate than climate scientists had previously believed.
Scientists have found that a solar Grand Minimum 2800 years ago might have caused a period of cooling in Europe.
The evidence for this link is at this moment slim, based upon a single data point from a lake in Germany. Nonetheless, it is further evidence that the Sun’s production of sunspots is more important to global climate than climate scientists had previously believed.
Antonin Dvorak – From the New World, Symphony #9, 2nd movement
An evening pause: The most beautiful melody from the second movement of Antonin Dvorak’s 9th Symphony, “From the New World,” performed here by the City of Birmingham Symphony Orchestra, conducted by Andris Nelsons.
SpaceX launch to ISS has now been rescheduled for May 19.
The SpaceX test launch of Dragon to ISS has now been rescheduled for May 19.
The SpaceX test launch of Dragon to ISS has now been rescheduled for May 19.
Shanthi the elephant plays the harmonica.
An evening pause: An elephant playing an harmonica? As Shakespeare said, “There are more things in heaven and earth, Horatio,/Than are dreamt of in your philosophy.”
Carol Burnett and Robin Williams – The Funeral
Aerojet successfully completed a hot-fire test yesterday of its AJ26 engine to be used in Orbital Sciences Antares rocket.
The competition heating up: Aerojet successfully completed a hot-fire test yesterday of its AJ26 engine, to be used in Orbital Sciences Antares rocket.
The competition heating up: Aerojet successfully completed a hot-fire test yesterday of its AJ26 engine, to be used in Orbital Sciences Antares rocket.
Using the Moon as a mirror
Using the Moon as a mirror.
Using the Moon as a mirror.
The left’s Founding Fathers
The CERN physicist who plotted with Islamic terrorists has been sentenced to five years in prison.
The CERN physicist who planned bombing attacks with Islamic terrorists has been sentenced to five years in prison.
The sentence includes one year “suspended”, and might end up being shortened further for time served and other sentence reductions. I wonder what he’ll do when he gets out.
The CERN physicist who planned bombing attacks with Islamic terrorists has been sentenced to five years in prison.
The sentence includes one year “suspended”, and might end up being shortened further for time served and other sentence reductions. I wonder what he’ll do when he gets out.
The art of flight – extreme snowboarding
The five men arrested for planning to blow up a bridge in Ohio turn out to all be active Occupy Wall Street activists.
Why am I not surprised? The five men arrested for planning to blow up a bridge in Ohio turn out to all be active Occupy Wall Street activists.
As despicable as this act of violence might have been, it is just as despicable for major news organizations to fail to mention the important fact that they are Occupiers.
Why am I not surprised? The five men arrested for planning to blow up a bridge in Ohio turn out to all be active Occupy Wall Street activists.
As despicable as this act of violence might have been, it is just as despicable for major news organizations to fail to mention the important fact that they are Occupiers.
A new study has found that the glaciers of Greenland are not behaving as predicted.
The uncertainty of science: A new study has found that the glaciers of Greenland are not behaving as predicted.
In northwestern Greenland, for example, where most of the glaciers move relatively quickly and flow directly into the sea rather than ending on land, average speed jumped by 8% between 2000 and 2005 and rose another 18% from 2005 to 2010. Nevertheless, the researchers report online today in Science, the glaciers in this region showed no uniform pattern of acceleration. About one-third flowed at the same rate throughout the decade, one-fourth slowed during the interval, and about 15% slowed during the first half of the decade and then surged from 2005 to 2010.
Similarly, many of the individual glaciers in southeastern Greenland don’t follow the region’s overall trend. Although the average speeds for these glaciers increased by 28% over the decade, substantial accelerations by some glaciers were balanced by considerable slowing by others. About 43% of the glaciers in the region sped up between 2000 and 2005, but around 25% slowed down by more than 15% from 2005 to 2010.
In other words, if there is any warming, it hasn’t manifested itself in a predictable manner in the glaciers of Greenland. In fact, the data above suggests instead that if there has been any warming, it either has been far less than predicted, or has had relatively little influence on the Greenland ice sheet.
The uncertainty of science: A new study has found that the glaciers of Greenland are not behaving as predicted.
In northwestern Greenland, for example, where most of the glaciers move relatively quickly and flow directly into the sea rather than ending on land, average speed jumped by 8% between 2000 and 2005 and rose another 18% from 2005 to 2010. Nevertheless, the researchers report online today in Science, the glaciers in this region showed no uniform pattern of acceleration. About one-third flowed at the same rate throughout the decade, one-fourth slowed during the interval, and about 15% slowed during the first half of the decade and then surged from 2005 to 2010.
Similarly, many of the individual glaciers in southeastern Greenland don’t follow the region’s overall trend. Although the average speeds for these glaciers increased by 28% over the decade, substantial accelerations by some glaciers were balanced by considerable slowing by others. About 43% of the glaciers in the region sped up between 2000 and 2005, but around 25% slowed down by more than 15% from 2005 to 2010.
In other words, if there is any warming, it hasn’t manifested itself in a predictable manner in the glaciers of Greenland. In fact, the data above suggests instead that if there has been any warming, it either has been far less than predicted, or has had relatively little influence on the Greenland ice sheet.
Boeing’s CST-100 commercial manned capsule successfully completed its second parachute drop test from 14,000 feet on Wednesday.
Boeing’s CST-100 commercial manned capsule successfully completed its second parachute drop test from 14,000 feet on Wednesday.
Boeing’s CST-100 commercial manned capsule successfully completed its second parachute drop test from 14,000 feet on Wednesday.
Last week the federal government abandoned more than a century of precedent to declare it holds senior water rights across much of Arizona’s San Pedro River riparian watershed.
We’re here to help you: Last week the federal government abandoned more than a century of precedent to declare it holds senior water rights across much of Arizona’s San Pedro River riparian watershed.
For some additional background, see this story.
We’re here to help you: Last week the federal government abandoned more than a century of precedent to declare it holds senior water rights across much of Arizona’s San Pedro River riparian watershed.
For some additional background, see this story.
Scientists have discovered that the half life of one of their key isotopes for dating the solar system is 30% shorter than previously believed.
The uncertainty of science: Scientists have discovered that the half life of one of their key isotopes for dating the age of the solar system is 30% shorter than previously believed.
The main result of the work of the international scientists, detailed in a recent article in Science, is a new determination of the half-life of 146Sm, previously adopted as 103 million years, to a much shorter value of 68 million years. The shorter half-life value, like a clock ticking faster, has the effect of shrinking the assessed chronology of events in the early solar system and in planetary differentiation into a shorter time span.
The new time scale, interestingly, is now consistent with a recent and precise dating made on a lunar rock and is in better agreement with the dating obtained with other chronometers. The measurement of the half-life of 146Sm, performed over several years by the collaborators, involved the use of the ATLAS particle accelerator at Argonne National Laboratory in Illinois.
The uncertainty of science: Scientists have discovered that the half life of one of their key isotopes for dating the age of the solar system is 30% shorter than previously believed.
The main result of the work of the international scientists, detailed in a recent article in Science, is a new determination of the half-life of 146Sm, previously adopted as 103 million years, to a much shorter value of 68 million years. The shorter half-life value, like a clock ticking faster, has the effect of shrinking the assessed chronology of events in the early solar system and in planetary differentiation into a shorter time span.
The new time scale, interestingly, is now consistent with a recent and precise dating made on a lunar rock and is in better agreement with the dating obtained with other chronometers. The measurement of the half-life of 146Sm, performed over several years by the collaborators, involved the use of the ATLAS particle accelerator at Argonne National Laboratory in Illinois.
Starland Vocal Band – Afternoon Delight
A special issue from Nature: Peopling the planet.
A special issue from Nature: Peopling the planet.
I haven’t yet had time to read this special issue, but it will certainly be fascinating, as it apparently summarizes the most current knowledge scientists have about the manner and timing of the human migration of the entire surface of the Earth. Overall, it appears that this migration took place sooner and faster than previously believed. Definitely worth a read.
A special issue from Nature: Peopling the planet.
I haven’t yet had time to read this special issue, but it will certainly be fascinating, as it apparently summarizes the most current knowledge scientists have about the manner and timing of the human migration of the entire surface of the Earth. Overall, it appears that this migration took place sooner and faster than previously believed. Definitely worth a read.
The Department of Energy has approved the start of detailed engineering for the Large Synoptic Survey Telescope.
Ground-based astronomy moves forward: The Department of Energy has approved the start of detailed engineering for the camera on the Large Synoptic Survey Telescope.
I have to admit, I am puzzled why the Department of Energy is involved in this. Government funding for ground-based telescopes normally comes from the National Science Foundation.
Ground-based astronomy moves forward: The Department of Energy has approved the start of detailed engineering for the camera on the Large Synoptic Survey Telescope.
I have to admit, I am puzzled why the Department of Energy is involved in this. Government funding for ground-based telescopes normally comes from the National Science Foundation.
Europe has decided to build a probe, dubbed JUICE, to study Ganymede, Callisto and Europa, Jupiter’s big icy moons.
Europe has decided to build a probe to study Ganymede, Callisto and Europa, Jupiter’s big icy moons.
Known as JUICE, the Jupiter Icy Moons Explorer, the probe will enter orbit around the gas giant planet in 2030 for a series of flybys of Ganymede, Callisto and Europa. JUICE will brake into orbit around Ganymede, Jupiter’s largest moon, in 2032 for at least one year of close-up research.
Europe has decided to build a probe to study Ganymede, Callisto and Europa, Jupiter’s big icy moons.
Known as JUICE, the Jupiter Icy Moons Explorer, the probe will enter orbit around the gas giant planet in 2030 for a series of flybys of Ganymede, Callisto and Europa. JUICE will brake into orbit around Ganymede, Jupiter’s largest moon, in 2032 for at least one year of close-up research.
The destruction of a star by a black hole, seen by astronomers for the first time.
The destruction of a star by a black hole, seen by astronomers for the first time.
The destruction of a star by a black hole, seen by astronomers for the first time.
The battle to simplify and ease the United State”s international trade laws heats up.
The battle to simplify and ease the United State”s international trade laws heats up.
The battle to simplify and ease the United State”s international trade laws heats up.
A search engine that intentionally skips the top million results.
Want to find something different? Use a search engine that intentionally skips the top million results.
Want to find something different? Use a search engine that intentionally skips the top million results.
The world’s oldest blood cells
A new study has found that the trends of stream temperatures have no correlation with climate trends.
The uncertainty of science: A new study has found that the trends of stream temperatures have no correlation with climate trends.
The uncertainty of science: A new study has found that the trends of stream temperatures have no correlation with climate trends.