How Curiosity’s nuclear power plant works.
How Curiosity’s nuclear power plant works.
How Curiosity’s nuclear power plant works.
Tag: science
How Curiosity’s nuclear power plant works.
Quasicrystals from space.
The tread of Curiosity’s tires will leave behind the imprint of JPL, written in Morse code.
Interesting factoid: The tread of Curiosity’s tires will leave behind an imprint that reads “JPL,” only it is written in Morse code, not plain English.
Interesting factoid: The tread of Curiosity’s tires will leave behind an imprint that reads “JPL,” only it is written in Morse code, not plain English.
The Earth destroyed repeatedly, in the name of science.
The Earth destroyed repeatedly, in the name of science.
The Earth destroyed repeatedly, in the name of science.
A UCLA scientist is proposing that the largest canyon on Mars was formed by plate tectonics
A UCLA scientist is proposing that Valles Marineris — the largest canyon on Mars and the solar system, was formed by plate tectonics.
“In the beginning, I did not expect plate tectonics, but the more I studied it, the more I realized Mars is so different from what other scientists anticipated,” Yin said. “I saw that the idea that it is just a big crack that opened up is incorrect. It is really a plate boundary, with horizontal motion. That is kind of shocking, but the evidence is quite clear. The shell is broken and is moving horizontally over a long distance. It is very similar to the Earth’s Dead Sea fault system, which has also opened up and is moving horizontally.”
The two plates divided by Mars’ Valles Marineris have moved approximately 93 miles horizontally relative to each other, Yin said. California’s San Andreas Fault, which is over the intersection of two plates, has moved about twice as much — but the Earth is about twice the size of Mars, so Yin said they are comparable.
A UCLA scientist is proposing that Valles Marineris — the largest canyon on Mars and the solar system, was formed by plate tectonics.
“In the beginning, I did not expect plate tectonics, but the more I studied it, the more I realized Mars is so different from what other scientists anticipated,” Yin said. “I saw that the idea that it is just a big crack that opened up is incorrect. It is really a plate boundary, with horizontal motion. That is kind of shocking, but the evidence is quite clear. The shell is broken and is moving horizontally over a long distance. It is very similar to the Earth’s Dead Sea fault system, which has also opened up and is moving horizontally.”
The two plates divided by Mars’ Valles Marineris have moved approximately 93 miles horizontally relative to each other, Yin said. California’s San Andreas Fault, which is over the intersection of two plates, has moved about twice as much — but the Earth is about twice the size of Mars, so Yin said they are comparable.
The Sonic Boom
Divers have discovered a Roman shipwreck off the Italian coast so well preserved that they think the food cargo in 200 amphoras might still be intact.
Divers have discovered a Roman shipwreck off the Italian coast so well preserved that they think the food cargo in 200 amphoras might still be intact.
Divers have discovered a Roman shipwreck off the Italian coast so well preserved that they think the food cargo in 200 amphoras might still be intact.
Despite a 3x increase in the use of gasoline and diesel fuel since the 1960s, the amount of vehicle-related pollution in the Los Angeles area has declined by 98 percent during that same time.
Good news: Despite a 3x increase in the use of gasoline and diesel fuel since the 1960s, the amount of vehicle-related pollution in the Los Angeles area has declined by 98 percent during that same time.
While many on the left will argue that this proves the validity of government regulation, I only see it as evidence that the initial regulations imposed in the 1970s did their job, and that there is no reason for stricter regulation now, something that the EPA, the Obama administration, and the left continue to demand.
Good news: Despite a 3x increase in the use of gasoline and diesel fuel since the 1960s, the amount of vehicle-related pollution in the Los Angeles area has declined by 98 percent during that same time.
While many on the left will argue that this proves the validity of government regulation, I only see it as evidence that the initial regulations imposed in the 1970s did their job, and that there is no reason for stricter regulation now, something that the EPA, the Obama administration, and the left continue to demand.
An absolutely breathtaking view of the Milky Way as seen from Mars
An absolutely breathtaking view of the Milky Way as seen from Mars.
As one of the commenters noted, “Aaaaah……….it’s so beautiful. It seems like you could almost reach out and touch it!”
An absolutely breathtaking view of the Milky Way as seen from Mars.
As one of the commenters noted, “Aaaaah……….it’s so beautiful. It seems like you could almost reach out and touch it!”
The myth that rice tossed out at weddings might harm the birds who eat it has now been debunked by science students at the University of Kentucky.
Why am I not surprised? The myth that rice tossed out at weddings might harm the birds who eat it has now been debunked by science students at the University of Kentucky.
Why am I not surprised? The myth that rice tossed out at weddings might harm the birds who eat it has now been debunked by science students at the University of Kentucky.
Curiosity views its surroundings.
Curiosity views its surroundings. More images here.
In another story, there is speculation that Curiosity’s first image actually captured the dust cloud produced when the spacecraft’s Sky Crane/rockets crashed after placing the rover on the ground and then flying away.
Compare this image, taken right after landing, with this image, taken later. The splotch on the horizon has disappeared.
Curiosity views its surroundings. More images here.
In another story, there is speculation that Curiosity’s first image actually captured the dust cloud produced when the spacecraft’s Sky Crane/rockets crashed after placing the rover on the ground and then flying away.
Compare this image, taken right after landing, with this image, taken later. The splotch on the horizon has disappeared.
Using today’s most advanced climate models Indian meteorologists were still unable to correctly predict this year’s monsoon rainfall.
The uncertainty of science: Using today’s most advanced climate computer models and data, Indian meteorologists were still unable to correctly predict this year’s monsoon rainfall.
The rains during the four-month-long monsoon season (June to September) – accounting for more than 80% of India’s annual rainfall – is crucial for the agricultural economy. In April, the Indian Meteorological Department (IMD) had predicted that the monsoon season would see normal or above-average rainfall. On 2 August, however, it confessed that more than half of India has received “deficient or scanty” rains, and that the monsoon rainfall for the entire country is likely to be 19.7 % less than normal.
Because they were trying to predict a long term weather pattern, the overall rainfall produced by the yearly monsoon, this prediction was not unlike most of the climate temperature predictions produced by the IPCC’s global warming climate scientists. Moreover, this monsoon prediction likely used similar algorithms and the same data as the IPCC models.
Thus, this failed prediction of monsoon rainfall gives us another peek into the accuracy of those global warming climate models. And that peek is not encouraging. It suggests once again that we should not yet put much faith in the predictive accuracy of the IPCC’s models. The science is simply not advanced enough yet.
The uncertainty of science: Using today’s most advanced climate computer models and data, Indian meteorologists were still unable to correctly predict this year’s monsoon rainfall.
The rains during the four-month-long monsoon season (June to September) – accounting for more than 80% of India’s annual rainfall – is crucial for the agricultural economy. In April, the Indian Meteorological Department (IMD) had predicted that the monsoon season would see normal or above-average rainfall. On 2 August, however, it confessed that more than half of India has received “deficient or scanty” rains, and that the monsoon rainfall for the entire country is likely to be 19.7 % less than normal.
Because they were trying to predict a long term weather pattern, the overall rainfall produced by the yearly monsoon, this prediction was not unlike most of the climate temperature predictions produced by the IPCC’s global warming climate scientists. Moreover, this monsoon prediction likely used similar algorithms and the same data as the IPCC models.
Thus, this failed prediction of monsoon rainfall gives us another peek into the accuracy of those global warming climate models. And that peek is not encouraging. It suggests once again that we should not yet put much faith in the predictive accuracy of the IPCC’s models. The science is simply not advanced enough yet.
One of the teams competing for the $30 million Google Lunar X-Prize has signed a launch contract with China.
The competition heats up: One of the teams competing for the $30 million Google Lunar X-Prize has signed a launch contract with China.
The competition heats up: One of the teams competing for the $30 million Google Lunar X-Prize has signed a launch contract with China.
In celebration of the European Southern Observatory’s fiftieth anniversary, they are holding two competitions
Pick the target: In celebration of the European Southern Observatory’s fiftieth anniversary, they are holding two competitions, one of which allows the public to pick what the Very Large Telescope will look at. With awards!
Pick the target: In celebration of the European Southern Observatory’s fiftieth anniversary, they are holding two competitions, one of which allows the public to pick what the Very Large Telescope will look at. With awards!
The first color image from Curiosity.
The first color image from Curiosity.
And from Mars Reconnaissance Orbiter, images (scroll down to Update II) showing all of Curiosity’s hardware scattered across the Martian surface. More here.
And here is a good overview of the possible directions Curiosity might roam in the coming days.
The first color image from Curiosity.
And from Mars Reconnaissance Orbiter, images (scroll down to Update II) showing all of Curiosity’s hardware scattered across the Martian surface. More here.
And here is a good overview of the possible directions Curiosity might roam in the coming days.
The Sun continues to fizzle
Yesterday NOAA posted its monthly update of the ongoing sunspot cycle of the Sun. You can see this latest graph, covering the month of July, below the fold.
As we have seen now for almost four years, the Sun continues to under-perform the predictions of solar scientists when it comes to the number of sunspots it is producing. In fact, that the sunspot number did not rise in July is surprising, as July had appeared to be a very active month for sunspots, with some of the strongest solar flares and coronal mass ejections seen in years. Instead, the number declined ever so slightly.
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The first science images from Curiosity, including nearby Mt. Sharp.
The first science images from Curiosity, including nearby Mt. Sharp. More here.
The first science images from Curiosity, including nearby Mt. Sharp. More here.
First high resolution image from Curiosity
The first high resolution image from Curiosity.
This image isn’t that different from the first two, showing one of the rover’s wheels and the horizon. This camera is for guiding the rover’s movement and is not one of the cameras that will used for science. Nonetheless, it reconfirms that Curiosity is functioning as expected.
The first high resolution image from Curiosity.
This image isn’t that different from the first two, showing one of the rover’s wheels and the horizon. This camera is for guiding the rover’s movement and is not one of the cameras that will used for science. Nonetheless, it reconfirms that Curiosity is functioning as expected.
Curiosity has landed safely on Mars.
The United States has done it again: Curiosity has landed safely on Mars. Images have already been received, with the first showing one of the rover’s wheels on the ground. NASA has posted those first images. More here.
The United States has done it again: Curiosity has landed safely on Mars. Images have already been received, with the first showing one of the rover’s wheels on the ground. NASA has posted those first images. More here.
India’s government has okayed the launch of an unmanned probe to Mars.
The competition heats up: India’s government has okayed the launch of an unmanned probe to Mars.
The competition heats up: India’s government has okayed the launch of an unmanned probe to Mars.
Making fire using only Ikea products
An evening pause: What to do when you don’t have matches and all that is left is the nearest Ikea store.
Archeologists are disputing the age of a jawbone found in a cave in England.
The uncertainty of science: Archeologists are disputing the age of a jawbone found in a cave in England.
Both sides of the debate agree that there is a lot riding on the outcome. “What is at stake is the entire [prehistory] of Neandertals and early modern humans in Europe,” Pettitt says. Apart from the Kents Cavern fossil and some 43,000- to 45,000-year-old teeth from Italy whose status as modern human or Neandertal is currently also debated, the oldest undisputed human fossils in Europe are about only 40,000 years old and come from a site in Romania. If modern humans really made it all the way to northwest Europe by 41,500 years ago or even earlier, it would mean that they entered Europe much earlier than once thought and also spread across the continent very rapidly. It would also increase the overlap between modern humans and the Neandertals, who already lived in Europe, and who went extinct sometime between 40,000 and 35,000 years ago. What’s more, such an overlap could make it more likely that Neandertals, who made sophisticated ornaments and tools in their last years, copied these techniques from modern humans rather than inventing them on their own.
The uncertainty of science: Archeologists are disputing the age of a jawbone found in a cave in England.
Both sides of the debate agree that there is a lot riding on the outcome. “What is at stake is the entire [prehistory] of Neandertals and early modern humans in Europe,” Pettitt says. Apart from the Kents Cavern fossil and some 43,000- to 45,000-year-old teeth from Italy whose status as modern human or Neandertal is currently also debated, the oldest undisputed human fossils in Europe are about only 40,000 years old and come from a site in Romania. If modern humans really made it all the way to northwest Europe by 41,500 years ago or even earlier, it would mean that they entered Europe much earlier than once thought and also spread across the continent very rapidly. It would also increase the overlap between modern humans and the Neandertals, who already lived in Europe, and who went extinct sometime between 40,000 and 35,000 years ago. What’s more, such an overlap could make it more likely that Neandertals, who made sophisticated ornaments and tools in their last years, copied these techniques from modern humans rather than inventing them on their own.
Launching a beer can into space.
Launching a beer can into space. With video! More here.
Launching a beer can into space. With video! More here.
New computer models suggest that the Moon was created when a Mars-sized asteroid hit the Earth in a head-on collision at high speed, not a glancing blow at relatively slow speeds, as previously thought.
New computer models suggest that the Moon was created when a Mars-sized asteroid hit the Earth in a head-on collision at high speed, not a glancing blow at relatively slow speeds, as previously thought.
New computer models suggest that the Moon was created when a Mars-sized asteroid hit the Earth in a head-on collision at high speed, not a glancing blow at relatively slow speeds, as previously thought.
Curiosity’s journey and upcoming landing, a summary.
Curiosity’s journey and upcoming landing, a summary.
Curiosity’s journey and upcoming landing, a summary.
What one supernovae looks like after the boom.
What one supernovae looks like after the boom.
What one supernovae looks like after the boom.
The house of the future, as predicted in 1957
How the federal government has persecuted a scientist for whistling at a whale.
How the federal government has persecuted a scientist for whistling at a whale.
How the federal government has persecuted a scientist for whistling at a whale.
A scientific analysis of a database of over a million songs produced since 1955 has found that modern popular music is louder and has less variety or range than the popular music of the past.
A scientific analysis of a database of over a million songs produced since 1955 has found that modern popular music is louder and has less variety or range than the popular music of the past. Key quote:
Lastly, the researchers detected a trend of homogenization of the timbral palette. Timbre is what makes a particular musical sound different from another, even when they have the same pitch and loudness. It is essentially the difference between different instruments playing the same note at the same loudness. They found that, after peaking in the mid 60s, timbral variety has continued to narrow.
This confirms a suspicion of many fans of modern popular music, that it is less interesting and shows far less creativity than the popular music of the 1960s. This result might also explain why 1960s music remains so popular.
A scientific analysis of a database of over a million songs produced since 1955 has found that modern popular music is louder and has less variety or range than the popular music of the past. Key quote:
Lastly, the researchers detected a trend of homogenization of the timbral palette. Timbre is what makes a particular musical sound different from another, even when they have the same pitch and loudness. It is essentially the difference between different instruments playing the same note at the same loudness. They found that, after peaking in the mid 60s, timbral variety has continued to narrow.
This confirms a suspicion of many fans of modern popular music, that it is less interesting and shows far less creativity than the popular music of the 1960s. This result might also explain why 1960s music remains so popular.
A journalist takes objective look at global warming
For the past week there has been a new spat of articles written about human caused global warming, instigated by an op-ed (subscription required) written by scientist Richard Muller in the New York Times, where he wrote:
Three years ago I identified problems in previous climate studies that, in my mind, threw doubt on the very existence of global warming. Last year, following an intensive research effort involving a dozen scientists, I concluded that global warming was real and that the prior estimates of the rate of warming were correct. I’m now going a step further: Humans are almost entirely the cause.
Not surprisingly, the mainstream press has jumped on this op-ed and the public release of new data by Muller’s team as further proof that the debate over global warming is settled and we should all bow to our governmental overlords and agree to any regulations they propose to save the planet.
Not so fast.
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