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Tuesday, January 29, 2008


Examples of comets

LOS ANGELES - An asteroid at least 500 feet long will make a rare close pass by Earth next week, but there is no chance of an impact, scientists reported Thursday.

The object, known as 2007 TU24, is expected to whiz by Earth on Tuesday with its closest approach at 334,000 miles, or about 1.4 times the distance of Earth to the moon.

The nighttime encounter should be bright enough for medium-sized telescopes to get a glimpse, said Don Yeomans, manager of the Near-Earth Object Program Office NASA's Jet Propulsion Laboratory, which tracks potentially dangerous space rocks.

However, next week's asteroid pass "has no chance of hitting, or affecting, Earth," Yeomans said.

An actual collision of a similar-sized object with Earth occurs on average every 37,000 years.

Spotted last October by the NASA-funded Catalina Sky Survey in Arizona, 2007 TU24 is estimated to be between 500 feet and 2,000 feet long. The next time an asteroid this size will fly this close to Earth will be in 2027.

Scientists plan to point the Goldstone radar telescope in Carlifor and the in Puerto rico at the asteroid and observe its path before and after its closest approach to Earth. Researchers will use instruments to measure its rotation and composition.

The 2007 TU24 rendezvous comes a day before another asteroid is projected to pass close to Mars.

Scientists have effectively ruled out a collision between the Red Planet and the asteroid 2007 WD5, estimating it will pass at a distance of more than 16,000 miles from the Martian surface. Initial observations of the Mars-bound asteroid put the odds of an impact at 1 in 25, but scientists later dropped the odds to 1 in 10,000.

Example of asteroids

Source :

Sunday, January 27, 2008

Satellite out of orbit, may hit earth

WASHINGTON - A large U.S. spy satellite has lost power and could hit the Earth in late February or March, government officials said Saturday.The satellite, which no longer can be controlled, could contain hazardous materials, and it is unknown where on the planet it might come down, they said. The officials spoke on condition of anonymity because the information is classified as secret.

"Appropriate government agencies are monitoring the situation," said Gordon Johndroe, a spokesman for the National Security Council, when asked about the situation after it was disclosed by other officials. "Numerous satellites over the years have come out of orbit and fallen harmlessly. We are looking at potential options to mitigate any possible damage this satellite may cause."

He would not comment on whether it is possible for the satellite to be perhaps shot down by a missile. He said it would be inappropriate to discuss any specifics at this time.

A senior government official said that lawmakers and other nations are being kept apprised of the situation.

Such an uncontrolled re-entry could risk exposure of U.S. secrets, said John Pike, a defense and intelligence expert. Spy satellites typically are disposed of through a controlled re-entry into the ocean so that no one else can access the spacecraft, he said.

Pike also said it's not likely the threat from the satellite could be eliminated by shooting it down with a missile, because that would create debris that would then re-enter the atmosphere and burn up or hit the ground.

Pike, director of the defense research group, estimated that the spacecraft weighs about 20,000 pounds and is the size of a small bus. He said the satellite would create 10 times less debris than the Columbia space shuttle crash in 2003.

As for possible hazardous material in the spacecraft, Pike said it might contain beryllium, a light metal with a high melting point that is used in the defense and aerospace industries. Breathing beryllium can lead to chronic, incurable respiratory problems.

Jeffrey Richelson, a senior fellow with the National Security Archive, said the spacecraft likely is a photo reconnaissance satellite. Such eyes in the sky are used to gather visual information from space about adversarial governments and terror groups, including construction at suspected nuclear sites or militant training camps. The satellites also can be used to survey damage from hurricanes, fires and other natural disasters.

The largest uncontrolled re-entry by a NASA spacecraft was Skylab, the 78-ton abandoned space station that fell from orbit in 1979. Its debris dropped harmlessly into the Indian Ocean and across a remote section of western Australia.

In 2000, NASA engineers successfully directed a safe de-orbit of the 17-ton Compton Gamma Ray Observatory, using rockets aboard the satellite to bring it down in a remote part of the Pacific Ocean.

In 2002, officials believe debris from a 7,000-pound science satellite smacked into the Earth's atmosphere and rained down over the Persian Gulf, a few thousand miles from where they first predicted it would plummet.


Saturday, January 26, 2008


The Moon (Latin : Luna) is Earth's only natural satellite, and is the fifth largest one in the Solar system . The average centre-to-centre distance from the Earth to the Moon is 384,403 km, which is about thirty times the diameter of the Earth. The Moon has a diameter of 3,474 km —slightly more than a quarter that of the Earth, and about two-thirds of the average east–west distance across the United States. This means that the volume of the Moon is about 2 percent that of Earth. The gravitional pull at its surface is about 17 percent of the Earth's. The Moon makes a complete orbit around the Earth every 27.3 days, and the periodic variations in the geometry of the Earth–Moon–Sun system are responsible for the lunar phases that repeat every 29.5 days.

The Moon is the only calestial body to which humans have travelled and upon which humans have landed. The first artificial object to escape Earth's gravity and pass near the Moon was the Soviets Union's Luna 1, the first artificial object to impact the lunar surface was Luna 2, and the first photographs of the normally occluded Far side of moon were made by Luna 3, all in 1959. The first spacecraft to perform a successful lunar soft landing was Luna 9, and the first unmanned vehicle to orbit the Moon was Luna 4, both in 1966. The United State (U.S.) Apollo program achieved the only manned missions to date, resulting in six landings between 1969 and 1972. Human exploration of the Moon ceased with the conclusion of the Apollo program, although several countries have announced plans to send people or robotic spacecraft to the Moon.

Friday, January 18, 2008


Energia-Buran at launch pad

The official Buran tech specs

Maximum weight
105 tons
Payload weight 30 tons
Landing weight 82 - 87 tons
Returnable payload 15 - 20 tons
Crew 2 - 10 people
Flight duration 7 - 30 days
Orbit inclination range 50.7 - 110 degrees
Orbit altitude range 250 - 1,000 km
Orbital maneuvering system thrust (in vacuum) 8.8 tons
G-loads 3 - 1.6
Landing speed (with landing weight 82 tons) 312 - 360 km/hour
Maximum lateral maneuver during the reentry 1,700 km
Length 36.37 meters
Body length 30.85 meters
Body width 5.5 meters
Height 16.35 meters
Wing span 23.92 meters

Space Shuttle and Energia-Buran

sources :

Saturday, January 5, 2008

About Soyuz


Today, let's study the about the Soyuz Spacecraft.

Soyuz is consist of 3 section:

  1. Reentry Capsule
  2. Orbital Module
  3. Service Module

You can check on this website to know more :

Soyuz Album :

see? Malaysian flag is on top of the Soyuz! I'm proud to be a MALAYSIAN

Malaysian "Angkasawan" (Astronaut), Dr Sheikh Muszaphar Shukor in the Soyuz TMA 11 when launched on 21 October 2007. He made Malaysians proud!

Commander Peggy A. Whitson (right), Flight Engineer Yuri Malenchenko (left) join with Dr Sheikh Muszaphar Shukor (Malaysian Angkasawan) in Expedition 16.

Soyuz TMA 11 crew.

Soyuz TMA 11 (left) docked to the International Space Station.

CDRA Reinstalled; International Science Continues on Station

Expedition 16 Commander Peggy Whitson and Flight Engineer Dan Tani finished the removal and replacement of the Carbon Dioxide Removal Assembly (CDRA). Filters in the CDRA were also inspected and cleaned.

Flight Engineer Yuri Malenchenko exercised on the Treadmill Vibration Isolation System as part of a Russian experiment. The experiment is designed to study countermeasures to disorders associated with weightlessness and microgravity. Body mass measurements of the crew were also taken for a routine Russian biomedical assessment.

Whitson also activated the Microgravity Science Glovebox (MSG) to begin an experiment last performed during Expedition 13. The experiment, named InSPACE, studies special fluids, or “smart materials”, that may improve such things as braking systems and robotics. In the MSG, the fluids are subjected to a magnetic field and then transition to a solid-like state.

sources :

Friday, January 4, 2008

Expedition 16

Crew Speaks to Students, Continues Maintenance

International Space Station Expedition 16 crew members talked with students from the Robert L. Ford Explorer school in Lynn, Mass., Thursday morning. Using a space-to-ground link, students quizzed the station residents about life in space.

On the International Space Station, Commander Peggy Whitson and Flight Engineers Yuri Malenchenko and Dan Tani continue unloading cargo from the docked Progress 27 unpiloted resupply ship.

The crew also is working on the removal and replacement of the Carbon Dioxide Removal Assembly (CDRA). Located in the Destiny laboratory, the CDRA has been experiencing problems. The CDRA scrubs carbon dioxide from the station's cabin air.

Launch Vehicle:
ISS Soyuz 15 (TMA-11)

October 10, 2007
9:22 a.m. EDT

October 12, 2007
10:50 a.m. EDT


Nov. 9, 2007
Nov. 20, 2007
Nov. 24, 2007
Dec. 18, 2007

Spring 2008

Expedition 16's logo

The official insignia for Expedition 16

sources :

Wednesday, January 2, 2008

Happy New Year!!2008!!


I hope it's not to late to me to say "Happy New Year" to all!!. A new year means earth had finished rotating sun and thats mean we had start to rotate a new rotation. So, what ever your wish for this year, i hope you all can do it well!.Remember, each new year makes our earth becomes old, so we need to take a good care of our earth for our future generations!!.


Together, we can save our planets, OUR ONLY PLANETS. BEFORE IT WAS TOO LATE!

Thats all for now, bye!!

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