Tag: science
A planet without a star, only 100 light years away.
A planet without a star, only 100 light years away.
A planet without a star, only 100 light years away.
The discovery of volcanoes on Io
On March 8, 1979, as Voyager 1 was speeding away from Jupiter after its historic flyby of the gas giant three days earlier, it looked back at the planet and took some navigational images. Linda Morabito, one of the engineers in charge of using these navigational images to make sure the spacecraft was on its planned course, took one look at the image on the right, an overexposed image of the moon Io, and decided that it had captured something very unusual. On the limb of the moon was this strange shape that at first glance looked like another moon partly hidden behind Io. She and her fellow engineers immediately realized that this was not possible, and that the object was probably a plume coming up from the surface of Io. To their glee, they had taken the first image of an eruption of active volcano on another world!
Today, on the astro-ph preprint website, Morabito has published a minute-by-minute account of that discovery. It makes for fascinating reading, partly because the discovery was so exciting and unique, partly because it illustrated starkly the human nature of science research, and partly because of the amazing circumstances of that discovery. Only one week before, scientists has predicted active volcanism on Io in a paper published in the journal Science. To quote her abstract:
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Engineers have switched Mars Odyssey to its backup navigation equipment in order to save the failing primary system.
Engineers have switched Mars Odyssey to its backup navigation equipment in order to save the failing primary system.
Engineers have switched Mars Odyssey to its backup navigation equipment in order to save the failing primary system.
An older rover releases a picture
Scientists have released a spectacular panorama taken by the now dead rover, Spirit, from its perch at its 2006 winter haven. I have posted a cropped section of that panorama below the fold, with some analysis.
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Astronomers have found a super-earth exoplanet inside its star’s habitable zone.
Worlds without end: Astronomers have found a super-earth exoplanet inside its star’s habitable zone.
The planet is large enough that it might be more like Neptune, but if it should have any earth-sized moons they will definitely be capable of supporting life.
Update: The science paper included a wonderful graphic comparing the solar system of this star with that of our own solar system. I have posted this graphic below the fold. HD40307g is the potentially habitable planet.
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Worlds without end: Astronomers have found a super-earth exoplanet inside its star’s habitable zone.
The planet is large enough that it might be more like Neptune, but if it should have any earth-sized moons they will definitely be capable of supporting life.
Update: The science paper included a wonderful graphic comparing the solar system of this star with that of our own solar system. I have posted this graphic below the fold. HD40307g is the potentially habitable planet.
» Read more
Jupiter’s Great Red Spot continues to shrink.
Jupiter’s Great Red Spot continues to shrink.
Jupiter’s Great Red Spot continues to shrink.
The tragedy of Eritrea
The article is focused on the destruction by the Eritrean dictatorship of the country’s scientific and medical communities. I see this act of barbarism as merely a symptom of that country’s overall descent into tyranny.
The article is focused on the destruction by the Eritrean dictatorship of the country’s scientific and medical communities. I see this act of barbarism as merely a symptom of that country’s overall descent into tyranny.
The Sun takes a plunge
The latest monthly update the ongoing sunspot cycle of the Sun has been published today by NOAA. Once again, the trend suggests that the Sun’s ability to produce sunspots is fading, and fading fast.
I have posted this latest graph, covering the month of October, below the fold, with additional analysis.
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“Comet Hergenrother is splitting apart.”
Curiosity has found evidence showing how Mars lost its atmosphere.
Curiosity has found evidence showing how Mars lost its atmosphere.
Curiosity has found evidence showing how Mars lost its atmosphere.
The most distant supernova ever found.
Meteorite hunters in Poland have found Eastern Europe’s larges meteorite weighing almost 700 pounds.
Meteorite hunters in Poland have found Eastern Europe’s larges meteorite, weighing almost 700 pounds.
Meteorite hunters in Poland have found Eastern Europe’s larges meteorite, weighing almost 700 pounds.
“The U.S. is currently in an extended and intense hurricane ‘drought.'”
More evidence of past glaciers on Mars.
More evidence of past glaciers on Mars.
More evidence of past glaciers on Mars.
The twenty most bizarre scientific experiments of all time.
The twenty most bizarre scientific experiments of all time.
Though bizarre, some of these experiments produced profound results. See especially numbers 2, 7, 13, 18, and 19.
The twenty most bizarre scientific experiments of all time.
Though bizarre, some of these experiments produced profound results. See especially numbers 2, 7, 13, 18, and 19.
The B612 foundation has signed its first contract for building Sentinel, its private infrared space telescope designed to find asteroids that might impact the Earth.
The B612 foundation has signed its first contract for building Sentinel, its private infrared space telescope designed to find asteroids that might impact the Earth.
The B612 foundation has signed its first contract for building Sentinel, its private infrared space telescope designed to find asteroids that might impact the Earth.
Weirdness at the edge of the solar system.
Weirdness at the edge of the solar system.
Weirdness at the edge of the solar system.
A house-sized asteroid will zip past the Earth in February at a distance less than 14,000 miles.
Chicken Little report: A house-sized asteroid will zip past the Earth in February at a distance less than 14,000 miles.
The asteroid, referred to as 2012 DA14, has a diameter of approximately 45m and an estimated mass of 130,000 tonnes. It was discovered at the start of 2012 and is set to travel between the Earth and our geostationary communication satellites on 15 February 2013. At a distance of just 22,500km this will be the closest asteroid ‘fly by’ in recorded history. Asteroid and comet researchers will be gathering at the University of Central Florida (UCF) in Orlando, U.S., to watch the event, but experts say there is no chance of a collision – this time.
The claim that this is the closest “fly by” in recorded history sounds bogus to me, but because of the size of this asteroid the fly-by will nonetheless be quite interesting. Scientists should be able to get a very good look at 2012 DA14 as it goes by.
Chicken Little report: A house-sized asteroid will zip past the Earth in February at a distance less than 14,000 miles.
The asteroid, referred to as 2012 DA14, has a diameter of approximately 45m and an estimated mass of 130,000 tonnes. It was discovered at the start of 2012 and is set to travel between the Earth and our geostationary communication satellites on 15 February 2013. At a distance of just 22,500km this will be the closest asteroid ‘fly by’ in recorded history. Asteroid and comet researchers will be gathering at the University of Central Florida (UCF) in Orlando, U.S., to watch the event, but experts say there is no chance of a collision – this time.
The claim that this is the closest “fly by” in recorded history sounds bogus to me, but because of the size of this asteroid the fly-by will nonetheless be quite interesting. Scientists should be able to get a very good look at 2012 DA14 as it goes by.
The marshes of Mexico and their similarities to Gale Crater.
The marshes of Mexico and their similarities to Gale Crater.
The marshes of Mexico and their similarities to Gale Crater.
Why did the chicken cross the road?
Sugru: the story of the invention of this ultimate repair tool.
Sugru: the story of the invention of this ultimate repair tool.
Sugru: the story of the invention of this ultimate repair tool.
Meteorite experts now think the rock that hit a pastor’s house could be a piece from last week’s San Francisco fireball.
The uncertainty of science: Meteorite experts now think the rock that hit a pastor’s house could be a piece from last week’s San Francisco fireball.
At first they said, “Yes it was from space,” then they said “No it is not from space.” Now they think yes.
The uncertainty of science: Meteorite experts now think the rock that hit a pastor’s house could be a piece from last week’s San Francisco fireball.
At first they said, “Yes it was from space,” then they said “No it is not from space.” Now they think yes.
A new study suggests that the exoplanet orbiting the star Formalhaut that was supposedly imaged and then later theorized to be nothing more than a dust cloud might be a planet after all.
The uncertainty of science: A new study suggests that the exoplanet orbiting the star Formalhaut that was supposedly imaged and then later theorized to be nothing more than a dust cloud might be a planet after all.
The uncertainty of science: A new study suggests that the exoplanet orbiting the star Formalhaut that was supposedly imaged and then later theorized to be nothing more than a dust cloud might be a planet after all.
The after effects of the giant storm on Saturn.
The after effects of the giant storm on Saturn.
The after effects of the giant storm on Saturn.
Singing sand dunes
Singing sand dunes. With video.
Singing sand dunes. With video.
The rock found on Sunday is not part of the meteor that fell over San Francisco last week.
False alarm: The rock found on Sunday is not part of the meteor that fell over San Francisco last week.
False alarm: The rock found on Sunday is not part of the meteor that fell over San Francisco last week.
The comet that vanished
The comet that vanished.
The comet that vanished.
This is the first time since 1988 that climate hasn’t been mentioned in the presidential debate cycle
When you try to sell government policy based on crisis, and that crisis doesn’t take place as predicted, and in fact is shown to be based on fraud and dishonesty, the sales job will eventually fail. Thus, better to forget the whole thing and make believe it never happened.
When you try to sell government policy based on crisis, and that crisis doesn’t take place as predicted, and in fact is shown to be based on fraud and dishonesty, the sales job will eventually fail. Thus, better to forget the whole thing and make believe it never happened.
The first mirror for the Giant Magellan Telescope has been completed.
The first mirror for the Giant Magellan Telescope has been completed.
This is the first of seven. It is also the largest single mirror ever polished, at 8.4 meters, or 27.5 feet across. When completed the GMT’s segmented mirror will be 25 meters across, or more than 82 feet.
The first mirror for the Giant Magellan Telescope has been completed.
This is the first of seven. It is also the largest single mirror ever polished, at 8.4 meters, or 27.5 feet across. When completed the GMT’s segmented mirror will be 25 meters across, or more than 82 feet.