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Comets an Unlikely Source for Earth's Water.
- comets an Unlikely Source for Earth's Water
- ESA Focuses Attention on Mars
- Hydrogen Peroxide on Europa's Surface
- Reporter Gets a Ride on the Vomit Comet
COMETS AN UNLIKELY SOURCE FOR EARTH'S WATER
New data gathered by Caltech offers evidence against the
long-standing theory that the Earth's water was delivered
by comets over eons. Were this the case, our oceans would
contain more deuterium (or heavy water), which is prevalent
in Comet Hale-Bopp - and likely all comets.
ESA FOCUSES ATTENTION ON MARS
The European Space Agency has signed a contract with Matra
Marconi Space to send an unmanned probe to Mars. Equipped
with sensors to detect hidden water underneath the surface
of the planet, it's expected the spacecraft will launch in 2003.
HYDROGEN PEROXIDE ON EUROPA'S SURFACE
Galileo has returned images of Hydrogen peroxide on the surface
of Europa, one of Jupiter's moons. It's believed that particles
from Jupiter collide with the Moon and constantly form Hydrogen
peroxide - this is caused by a process called radiolysis.
REPORTER GETS A RIDE ON THE VOMIT COMET
CNN Reporter, Miles O'Brien, gets the opportunity to see what
it's like to be an astronaut-in-training aboard NASA's Vomit
Comet. The aircraft flies in parabolic arcs, allowing passengers
to experience 30 seconds of weightlessness.
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