Japanese asteroid mission a success; next up, NASA

Aug 26, 2011

A space mission to a nearby asteroid launched in 2005 has yielded some interesting clues about earth’s early formation.

Japanese scientists on that mission report today in the journal Science that despite retrieving a very small sample from the nearby Itokawa , the knowledge gained is huge.

“This is a great achievement for the Japan Aerospace Exploration Agency,” said Humberto Campins, a professor at the University of Central Florida and international expert on asteroids and comets. “The analysis of the Itokawa asteroid sample illustrates the wealth of information that can be obtained even from very small samples and sets the stage nicely for NASA’s OSIRIS REx mission, which is to sample a more primitive asteroid. That asteroid should help us understand the role asteroids played in the origin of ’s oceans and life.”

What scientists found in the Itokawa sample is unequivocal evidence that this type of asteroid is the parent of ordinary chondrites – the most common type of meteorites found on earth. Space weather morphs asteroid fragments and when they enter earth’s atmosphere they burn up, changing their chemical nature a bit. That’s why they are referred to as meteorites. The Japanese’s pristine sample has helped distinguish the original material on the rock and how it changed when it entered earth’s atmosphere. That is helpful to understanding the origin and evolution of the planet and the solar system.

Although technical glitches caused the Japanese to collect a smaller sample size than had been intended, Campins said the knowledge gained offers great insight and only makes him more eager to see NASA’s own asteroid mission take place.

The OSIRIS-REx mission, which targets a primitive asteroid, is scheduled to launch in 2016. Campins is part of that scientific team and believes the sample collected may hold important clues to understanding the illusive question of how the earth got its oceans.

He has reason to believe water on earth may have originally come from a primitive asteroid. Campins made international headlines in 2010 when he discovered evidence of water ice on two other primitive asteroids based on long-range observations. OSIRIS REx is an opportunity to potentially confirm those findings through a hands-on sample.

“It’s very exciting,” Campins said. “I just can’t wait to see what we find and what surprises Mother Nature has in store for us.”

Explore further: 'Space bubbles' may have aided enemy in fatal Afghan battle

add to favorites email to friend print save as pdf

Related Stories

Human mission to an asteroid: Why should NASA go?

Aug 24, 2011

Imagine, if you can, the first time human eyes see Earth as a distant, pale blue dot. We’ve dreamed of deep space missions for centuries, and during the Apollo era, space enthusiasts assumed we’d ...

AKARI's observations of asteroid Itokawa

Aug 23, 2007

The space-borne infrared observatory AKARI, observed asteroid Itokawa last month with its Infrared Camera. The data will be used to refine estimates of sizes of potentially hazardous asteroids in the future.

NASA plans to visit a near-Earth asteroid

Aug 17, 2011

In a few years a NASA spacecraft will seek the building blocks of life in a shovelful of asteroid dirt. The OSIRIS-REx spacecraft, targeted for launch in September 2016, will intercept asteroid 1999 RQ36, orbit it for a year, ...

Recommended for you

Getting to the root of the problem in space

8 hours ago

When we go to Mars, will astronauts be able to grow enough food there to maintain a healthy diet? Will they be able to produce food in NASA's Orion spacecraft on the year-long trip to Mars? How about growing ...

The difference between CMEs and solar flares

10 hours ago

This is a question we are often asked: what is the difference between a coronal mass ejection (CME) and a solar flare? We discussed it in a recent astrophoto post, but today NASA put out a video with amazing graphics that explain ...

Scientific instruments of Rosetta's Philae lander

11 hours ago

When traveling to far off lands, one packs carefully. What you carry must be comprehensive but not so much that it is a burden. And once you arrive, you must be prepared to do something extraordinary to make ...

User comments : 0