Tag: Japan
“Our worst crisis since World War Two”
First results from the Hayabusa asteroid samples
First results from the Hayabusa asteroid samples.
A preliminary analysis of asteroid samples returned last year by Japan’s Hayabusa probe show evidence the dust grains have a similar composition to stony meteorites that commonly fall to Earth. . . . The initial research also shows the samples inspected so far contain no organic molecules. Scientists also say the analysis confirms the rocks at Itokawa were formed 4.6 billion years ago at the dawn of the solar system.
First results from the Hayabusa asteroid samples.
A preliminary analysis of asteroid samples returned last year by Japan’s Hayabusa probe show evidence the dust grains have a similar composition to stony meteorites that commonly fall to Earth. . . . The initial research also shows the samples inspected so far contain no organic molecules. Scientists also say the analysis confirms the rocks at Itokawa were formed 4.6 billion years ago at the dawn of the solar system.
A detailed explanation of what has happened at the Fukushima nuclear power plant
Check out this detailed engineering explanation of what has happened, is happening, and will happen at the Fukushima nuclear power plant in Japan. Key quote:
The point is that the nuclear fuel has now been cooled down. Because the chain reaction has been stopped a long time ago, there is only very little residual heat being produced now. The large amount of cooling water that has been used is sufficient to take up that heat. Because it is a lot of water, the core does not produce sufficient heat any more to produce any significant pressure. Also, boric acid has been added to the seawater. Boric acid is “liquid control rod”. Whatever decay is still going on, the Boron will capture the neutrons and further speed up the cooling down of the core.
Check out this detailed engineering explanation of what has happened, is happening, and will happen at the Fukushima nuclear power plant in Japan. Key quote:
The point is that the nuclear fuel has now been cooled down. Because the chain reaction has been stopped a long time ago, there is only very little residual heat being produced now. The large amount of cooling water that has been used is sufficient to take up that heat. Because it is a lot of water, the core does not produce sufficient heat any more to produce any significant pressure. Also, boric acid has been added to the seawater. Boric acid is “liquid control rod”. Whatever decay is still going on, the Boron will capture the neutrons and further speed up the cooling down of the core.
Second nuclear meltdown likely under way in Japan, official says
More bad news: According to Japanese officials, a second nuclear meltdown is likely under way.
More bad news: According to Japanese officials, a second nuclear meltdown is likely under way.
Nuclear Meltdown at Quake-Damaged Japanese Plant
This ain’t good: A nuclear meltdown appears to have occurred at the quake-damaged Japanese power plant.
This ain’t good: A nuclear meltdown appears to have occurred at the quake-damaged Japanese power plant.
Quake moved Japan coast 8 feet; shifted Earth’s axis
The earthquake moved Japan’s coast eight feet while shifting the Earth’s axis about four inches.
The earthquake moved Japan’s coast eight feet while shifting the Earth’s axis about four inches.
Japan to fill leaking nuke reactor with sea water
Japan to fill leaking nuke reactor with sea water.
Japan to fill leaking nuke reactor with sea water.
Earthquake update
An earthquake update, with images.
An earthquake update, with images.
Japan’s Third Disaster
Japanese quake disrupts space station operations
The 8.9 earthquake has shut down the Japanese space station mission control center, forcing NASA to take over monitoring Japanese ISS modules.
The 8.9 earthquake has shut down the Japanese space station mission control center, forcing NASA to take over monitoring Japanese ISS modules.
No, the “supermoon” didn’t cause the Japanese earthquake
No, the “supermoon” didn’t cause the Japanese earthquake.
No, the “supermoon” didn’t cause the Japanese earthquake.
Panic buying as Hawaii and Pacific islands braced for killer waves to strike across thousands of miles of ocean
Hawaii and Pacific islands brace for killer tsunami waves to strike across thousands of miles of ocean.
More here about the situation in Japan.
Video:
Hawaii and Pacific islands brace for killer tsunami waves to strike across thousands of miles of ocean.
More here about the situation in Japan.
Video:
Robot arm on ISS shifts Japanese freighter to different port to clear path for shuttle
The robot arm on ISS shifted the Japanese freighter docked there to a different port today to clear a path for the shuttle.
The robot arm on ISS shifted the Japanese freighter docked there to a different port today to clear a path for the shuttle.
Japanese Volcano Filled to the Brim
The caldara of the erupting Japanese volcano Mount Shinmoe now appears to be filled to the brim. More photos here.
The caldara of the erupting Japanese volcano Mount Shinmoe now appears to be filled to the brim. More photos here.
Japan’s Mount Shinmoe erupts again
Japan’s Mount Shinmoe volcano erupted again today.
Japan’s Mount Shinmoe volcano erupted again today.
Japan’s second robot cargo vehicle successfully docks at ISS
Another Japanese space success today: Its second robot cargo vehicle has successfully docked at ISS.
Another Japanese space success today: Its second robot cargo vehicle has successfully docked at ISS.
Japan’s IKAROS Solar Sail Mission Extended for a Year
More solar sail news: Japan’s solar sail mission, IKAROS, has been extended for a year. Key quote:
With the extended lease on life, the team will try new navigational tricks, such as varying the sail’s angle toward the sun and changing the craft’s trajectory. Mori called these “risky” maneuvers because they are not sure if the sail will remain fully extended. They intend to model the sail’s behavior and the craft’s response to plan future solar sail missions.
More solar sail news: Japan’s solar sail mission, IKAROS, has been extended for a year. Key quote:
With the extended lease on life, the team will try new navigational tricks, such as varying the sail’s angle toward the sun and changing the craft’s trajectory. Mori called these “risky” maneuvers because they are not sure if the sail will remain fully extended. They intend to model the sail’s behavior and the craft’s response to plan future solar sail missions.
Cracked nozzled was possible cause of Japanese Venus probe failure
Engineers now think that a cracked nozzle caused the Japanese probe Akatsuki to miss Venus.
Engineers now think that a cracked nozzle caused the Japanese probe Akatsuki to miss Venus.
Ikaros still operating
The Japanese Venus probe Akatsuka might have failed, but its partner, the solar sail Ikaros, continues to function, and remains in contact with its ground controlers, even at a distance of 45 million miles. (The google translation of the daily blog is sometimes spotty (” I will go home 入Rita bath. It will fit your feet smell.”) but still worth reading,)
The Japanese Venus probe Akatsuka might have failed, but its partner, the solar sail Ikaros, continues to function, and remains in contact with its ground controlers, even at a distance of 45 million miles. (The google translation of the daily blog is sometimes spotty (” I will go home 入Rita bath. It will fit your feet smell.”) but still worth reading,)
First inspection of Hayabusa’s inner chamber reveals no asteroid particles
The first inspection of Hayabusa’s inner chamber revealed no visible asteroid particles. A microscopic search will follow however, as was done for the outer chamber, where 1500 asteroid particles were found.
The first inspection of Hayabusa’s inner chamber revealed no visible asteroid particles. A microscopic search will follow however, as was done for the outer chamber, where 1500 asteroid particles were found.
Orbital status of Akatsuki at Venus uncertain
The status of the Japanese probe Akatsuki in its attempt to go into orbit around Venus remains uncertain. The engines fired as scheduled, but radio signal was not regained at the scheduled time. Engineers are analyzing the spacecraft’s position now to see if it was successfully inserted into orbit.
The status of the Japanese probe Akatsuki in its attempt to go into orbit around Venus remains uncertain. The engines fired as scheduled, but radio signal was not regained at the scheduled time. Engineers are analyzing the spacecraft’s position now to see if it was successfully inserted into orbit.
‘Akatsuki’ probe set to try and enter Venus’s orbit
The Japanese spacecraft, Akatsuki, is set to enter orbit around Venus tomorrow.
The Japanese spacecraft, Akatsuki, is set to enter orbit around Venus tomorrow.
Why Hayabusa failed to fire its projectile at asteroid
Japanese scientists have determined that a programming error was the reason why Hayabusa failed to fire its projectile at the asteroid Itokawa in 2005.
Japanese scientists have determined that a programming error was the reason why Hayabusa failed to fire its projectile at the asteroid Itokawa in 2005.
Hayabusa captured asteroid dust
The first asteroid sample return! Japanese scientists announced today that their probe Hayabusa did capture asteroid dust in its visit to the asteroid Itokawa.
The first asteroid sample return! Japanese scientists announced today that their probe Hayabusa did capture asteroid dust in its visit to the asteroid Itokawa.
Hayabusa particles mostly rocky
Japanese scientists have announced that the particles found in the Hayabusa return capsule are mostly made up of rocky materials.
Japanese scientists have announced that the particles found in the Hayabusa return capsule are mostly made up of rocky materials.
Hayabusa brought back extraterrestrial matter
Reports today in the Japanese press say that the Hayabusa return capsule did capture minute particles of extraterrestrial material.
Reports today in the Japanese press say that the Hayabusa return capsule did capture minute particles of extraterrestrial material.
Results from Hayabusa delayed till next year
We won’t know if the Japanese probe Hayabusa actually brought asteroid materials back to Earth until spring 2011. Key quote from the project scientist:
Kawaguchi said his science team found “tens of particles” in Chamber A of the canister. The tiny particles are being removed one-by-one in an extraction process that is stretching longer than anticipated.
Note that they still have not opened Chamber B, which is thought to have had a better chance of capturing asteroid material because it was the chamber in contact with the asteroid Itokawa.
We won’t know if the Japanese probe Hayabusa actually brought asteroid materials back to Earth until spring 2011. Key quote from the project scientist:
Kawaguchi said his science team found “tens of particles” in Chamber A of the canister. The tiny particles are being removed one-by-one in an extraction process that is stretching longer than anticipated.
Note that they still have not opened Chamber B, which is thought to have had a better chance of capturing asteroid material because it was the chamber in contact with the asteroid Itokawa.
Kibo prices too high for business
The Japanese effort to rent out their Kibo module on ISS for research has stalled, mainly because private businesses apparently consider the prices too high.
The Japanese effort to rent out their Kibo module on ISS for research has stalled, mainly because private businesses apparently consider the prices too high.
Analysis of Hayabusa material extended
The publication of the results of the material found within the Hayabusa capsule has been delayed until December. The researchers have found that the particles in the capsule are smaller than expected, and they need more time to study them properly.
The publication of the results of the material found within the Hayabusa capsule has been delayed until December. The researchers have found that the particles in the capsule are smaller than expected, and they need more time to study them properly.
Japanese planning upgrades to HTV
The Japanese are considering upgrades to their unmanned HTV freighter that carries cargo to ISS. The upgrades would allow HTV to return large cargo to Earth, as well as possibly become a manned vehicle.
The Japanese are considering upgrades to their unmanned HTV freighter that carries cargo to ISS. The upgrades would allow HTV to return large cargo to Earth, as well as possibly become a manned vehicle.