Showing posts with label Space. Show all posts
Showing posts with label Space. Show all posts

Saturday, April 26, 2008

Candidates and the space race...

WASHINGTON (CNN) -- One issue the presidential candidates are not saying much about is space exploration. But some scientists, military experts and intelligence analysts say the next president may well determine whether America keeps an edge in space.

Last year, the United States managed 16 space launches; Russia had 22; China blasted off 10. China's exploding economy is paying for the education of hundreds of thousands of engineers each year, they are acquiring less space technology from other nations and developing more of their own, and they appear committed to dominating the heavens.

Their space program is still behind, says Robert Zubring, one of America's strongest proponents for Mars travel, but it is rocketing.

"And we're standing still. If we continue to stand still, by the middle of the next decade, their space program will be superior to ours and they'll be moving on to the moon and Mars, while we're ... looking back on our former greatness," he said. Watch more on the space race »Just in November, a Chinese robotic spacecraft circled the moon, capturing 3-D images. Chinese scientists talk about mining the lunar surface for possible nuclear energy resources that are plentiful there but rare on Earth.

Mars is a real target for future travel.

And remember when the Chinese shot down that weather satellite? Military experts do. After all, American troop movements, bomb targeting, intelligence, banking and communications systems now rely on eyes in the sky.

"They're making a point, absolutely. ... They were demonstrating a capability not only to themselves but to the rest of the world that they're a power of reckoning in the use ... in the dominance ... of space," retired U.S. Army Gen. David Grange said.

All three major presidential candidates -- Sens. Barack Obama, Hillary Clinton and John McCain -- say space is important, but none is strongly talking about a timeline for the moon or Mars. And certainly, there are other pressing issues: the war and the economy.

But there is genuine and growing fear among some scientists that if space does not become a higher priority, the Chinese program will be on par with America's by the end of the next president's second term. Then, it will be a real race to Mars even if we want to join in.

Just between you and me, if either candidate had the testicular (or ovarian?) fortitude to say "Yes, I will make it our goal to out a manned mission on Mars within the next 10 years", they would seel my vote outright. Nuts to healthcare, the economy, and Iraq! Earth is old hat! Let's freakin' get back into the business of doing cool stuff, and go to Mars already, dammit!

Sunday, January 27, 2008

Satellite could plummet to Earth

A "large" US spy satellite has gone out of control and is expected to crash to Earth some time in late February or March, government sources say.

Officials speaking on condition of anonymity said the satellite had lost power and propulsion, and could contain hazardous materials.

The White House said it was monitoring the situation.

A spokesman said "numerous" satellites had come out of orbit and fallen back to Earth harmlessly over the years.

"We are looking at potential options to mitigate any possible damage this satellite may cause," said Gordon Johndroe, who speaks for the US National Security Council.

Questioned by The Associated Press, he would not be drawn on whether the US would try to destroy the satellite, perhaps with a missile.

An unnamed official quoted by AP said the US government was keeping lawmakers and other countries abreast of the situation.

Fuel hazard

The satellite contains the rocket fuel hydrazine, a government official told AP on condition of anonymity.

A colourless liquid with an ammonia-like odour, the fuel is a toxic chemical and can cause harm to anyone who comes in contact with it.

John Pike, director of the defence research group GlobalSecurity.org, said an uncontrolled re-entry could risk exposure of US secrets.

Spy satellites typically are disposed of through a controlled re-entry into the ocean so that no one else can access the spacecraft, he was quoted by AP as saying.

The military expert believes that shooting the satellite down would create debris that would then re-enter the atmosphere and burn up or hit the ground.

In his estimate, the satellite weighs about 20,000 pounds (9,072kg) and is the size of a small bus.

It is possible, he adds, that this one died as long as a year ago and is just now getting ready to re-enter the atmosphere.

Another expert, Jeffrey Richelson of the National Security Archive, said the satellite is probably a photo reconnaissance satellite.

Into the ocean

AP notes that the largest uncontrolled re-entry by a US space agency (Nasa) craft was Skylab.

The 78-tonne abandoned space station fell from orbit in 1979.

Its debris dropped harmlessly into the Indian Ocean and across a remote section of western Australia, the US news agency says.

In 2002, officials believe debris from a 7,000-pound (3,175-kg) science satellite hit the Earth's atmosphere.

It rained down over the Gulf, a few thousand miles from where they first predicted it would crash.

Story from BBC NEWS:
http://news.bbc.co.uk/go/pr/fr/-/2/hi/science/nature/7211443.stm

I have often wondered how often this happens.