Asteroid hunt: What else is coming our way?

IT companies joining the hunt for Earth destroyers

The asteroid Apophis, named after an Egyptian god representing darkness and chaos, has, at the moment, a 1-to-45,000 chance of striking Earth in 2036. But those odds will soon change, probably in a good way for mankind, while the hunt for near-Earth objects continues.

It is an effort that involves scientists like David J. Tholen, one of the astronomers credited with finding Apophis. It also includes the planned construction of a massive telescope on a mountaintop in Chile and the creation of what may be the world's largest database. Even Google has entered the picture.

Tholen, who has a Ph.D. in planetary sciences, and his team discovered Apophis in June 2004. The asteroid has been traveling the heavens for eons, but what is alarming isn't so much the odds that it might strike Earth, but that it was only recently discovered as a possible threat.

Apophis is located in a part of the solar system that makes it difficult to detect because it travels in the daytime side of Earth. Apophis will spend 95 percent of its time on the side of the sky that has the sun in it, Tholen said. "Are there other objects like it that we haven't found yet? Almost certainly."

"Could one of those objects sneak up on us from the daytime side and smack us without us being aware?" Tholen asked. He successfully sought funding from NASA to explore those areas of space where detecting asteroids is difficult because of the sun. The only time these objects can be viewed is a couple of hours after sunset and couple of hours before sunrise. Anything visible looks more like a crescent moon than a full moon, "so the objects that you are trying to find are fainter still."

Apophis made news this month when the Association of Space Explorers, a Houston-based group that includes Russians and Americans who have flown on space missions, urged the United Nations (pdf format) to organize efforts to thwart Apophis and anything else potentially hurling this way.

"Apophis isn't the only threat, it's only one," said Andy Turnage, executive director of the association, "the vast majority of which haven't been identified."

IT systems will a play role in discovering future threats. In particular, there's an effort called the Large Synoptic Survey Telescope (LSST), involving 20 universities and national labs to build a large telescope on a 8,800-foot mountain peak in northern Chile, called Cerro Pachon. This telescope will have the potential of finding asteroids as small as 100 meters.

Once it begins operation in 2013, the LSST is expected to generate 30,000 gigabytes of data per night. In total, petabytes (1 petabyte equals 1 million gigabytes) of data will be created in what may well become the world's largest database. The project is expected to cost about US$467 million, said Donald Sweeney, LSST project manager.

Google joined the effort last month. "They are going to help us with how the data is served and indexed -- how do you find stuff in petabytes of data," Sweeney said.

Meanwhile, Apophis speeds through space. At 1,000 feet in diameter, it has the potential of causing considerable damage, but the odds are that it won't hit Earth.

For a brief period in December 2004, the odds of Apophis hitting Earth were estimated at 1-in-37 but changed as more observations were recorded. The 1-in-45,000 figure will change yet again, and it's expected that Apophis will become less of a threat, not more, as time goes on, Tholen said.

Brian Marsden, who recently retired as director of the Minor Planet Center at the Smithsonian Astrophysical Observatory at Harvard University, but remains involved in its work, said the probabilities frequently change substantially with increased observations.

Apophis "won't be dangerous ... at least not for centuries to come, millennium to come," Marsden said.

Join the newsletter!

Error: Please check your email address.
Rocket to Success - Your 10 Tips for Smarter ERP System Selection
Keep up with the latest tech news, reviews and previews by subscribing to the Good Gear Guide newsletter.

Patrick Thibodeau

Computerworld
Show Comments

Most Popular Reviews

Latest Articles

Resources

PCW Evaluation Team

Ben Ramsden

Sharp PN-40TC1 Huddle Board

Brainstorming, innovation, problem solving, and negotiation have all become much more productive and valuable if people can easily collaborate in real time with minimal friction.

Sarah Ieroianni

Brother QL-820NWB Professional Label Printer

The print quality also does not disappoint, it’s clear, bold, doesn’t smudge and the text is perfectly sized.

Ratchada Dunn

Sharp PN-40TC1 Huddle Board

The Huddle Board’s built in program; Sharp Touch Viewing software allows us to easily manipulate and edit our documents (jpegs and PDFs) all at the same time on the dashboard.

George Khoury

Sharp PN-40TC1 Huddle Board

The biggest perks for me would be that it comes with easy to use and comprehensive programs that make the collaboration process a whole lot more intuitive and organic

David Coyle

Brother PocketJet PJ-773 A4 Portable Thermal Printer

I rate the printer as a 5 out of 5 stars as it has been able to fit seamlessly into my busy and mobile lifestyle.

Kurt Hegetschweiler

Brother PocketJet PJ-773 A4 Portable Thermal Printer

It’s perfect for mobile workers. Just take it out — it’s small enough to sit anywhere — turn it on, load a sheet of paper, and start printing.

Featured Content

Product Launch Showcase

Latest Jobs

Don’t have an account? Sign up here

Don't have an account? Sign up now

Forgot password?