| Asteroid (36) |  |
Jenniskens calculates the object may have come from the Flora asteroid family in the asteroid belt but the chunk that hit the Chelyabinsk area was broken apparently not up in the asteroid belt itself.
Researchers at the University of Tokyo and Waseda University in Japan found that the rock had been exposed to cosmic rays for only about 1. 2 million years unusually short for rocks originating in the Flora family.
The rest of that rubble could still be around as part of the near-earth asteroid population.
The finding of water in a large asteroid means the building blocks of habitable planets existedâ ##and maybe still existâ##in the GD 61 system and likely also around substantial number of similar parent starssays lead author Jay Farihi from the Institute of Astronomy at the University of Cambridge. hese water-rich building blocks
and the terrestrial planets they build may in fact be commonâ##a system cannot create things as big as asteroids
Comets asteroids and icy moons have shown all signs of venting plumes into space. But because these bodies are far from Earth
when two asteroids collided and broke apart between Mars and Jupiter. The larger object spawned the cloud of L chondrites that bombarded Earth for about 10 million years.
But the fate and identity of the smaller asteroid has long been a mystery. The fact that the latest fossil comes from the same rock layers as the L chondrites suggests that it is a piece of that second asteroid says Schmitz.
The theory says that most of the smaller asteroid was vaporised during the collision so it also makes sense that only scant fragments of it would remain.
David Harper at Durham University UK agrees. The team may at last have identified the impactor responsible for the break up of the parent body of the L chondrite meteorites he says.
This was documented the largest asteroid break up event of the past 3 billion years says Schmitz.
#Crystal cocoons kept bacteria safe in space ASTEROIDS have a killer reputation taking the blame for death and destruction on massive scales.
and pressure of the asteroid or comet impact that made the crater about 23 million years ago.
Asteroid and comet impacts are ubiquitous in the solar system so Pontefract thinks impacts could have helped kick-start life on rocky planets
But NASA has plans for human missions to an asteroid and eventually Mars and getting home quickly won't be an option.
the aim is to send such a satellite to an asteroid to collect a scoop of dust.
whether life or its ingredients could have travelled to Earth on the back of a comet or asteroid.
considering sending robots to nearby asteroids. In some cases robot geologists could take HD video that would allow their human puppeteers to best plan their next moves suggests Cornwell.
For instance others have suggested that Mars lost its atmosphere all of a sudden during a powerful collision with an asteroid or comet.
Plans to return to the moon under George w bush's administration for instance morphed into crewed missions to an asteroid under Barack Obama's presidency.
I want to see vehicles that can mine asteroids. Its 2013 and we still havent even dug up that Monolith on the Moon.@
With this information the telescope is able to direct itself towards various objects in space including planets, galaxies, asteroids and stars automatically.
And, though such projects as mining asteroids with solar-powered drones might seem like science fiction,
And, though such projects as mining asteroids with solar-powered drones might seem like science fiction,
such as a suitably sized asteroid, beyond geostationary orbit to balance the cable and save the excessive length.
It's hoped that this will help astronomers to gain a better understanding of galaxy formations, aid in tracking potentially dangerous asteroids,
Magnesium is found as olivine in asteroids, but Neumann has achieved promising results with titanium, aluminium and other widely used metals.
or larger asteroids will remain a job for rockets. However, he says his drive could be suitable for lifting a spacecraft from low gravity objects like Mars'moons Phobos
on its orbital path through space, collides with particles from a comet or an asteroid. The Perseids come from the tail of Comet Swift-Tuttle,
and the ice grains produced by collisions among asteroids and comets in the Solar system.""Metchev's team conducted a study with data from NASA's Wide-field Infrared Survey Explorer (WISE TO search for any thermal glow that such dust
"We found that 51 Eridani is surrounded by warm dust that indicates the presence of an asteroid belt,
when lots of large asteroids collide and destroy each other, usually pushed around by a large planet like 51 Eridani b. Metchev adds,"
"The two belts the asteroid and the cometary belt around 51 Eridani fall on either side of the newly discovered planet 51 Eridani b."The overall structure bears striking resemblance to our own Solar system,
with Jupiter as the most massive planet orbiting between a belt of asteroids and a belt of comets,"explains Metchev."
but it won crack. t like navigating through the asteroid belt, you create a tortuous path:
the first in a line of spacecraft designed to test technologies needed to eventually mine asteroids launched from the International space station.
palladium, or rare earth materials from near-Earth asteroids. Prominent billionaire backers include Hollywood director James cameron and Google executives Larry page and Eric Schmidt.
But the exact mineral wealth of the asteroids most easily accessible from Earth remains unknown.
Indeed, a Harvard university study found just 10 nearby asteroids worth mining. Planetary Resourcesext demonstrator, called the Arkyd-6 (A6),
and avionics systemsalong with sensors that can analyze asteroids for the resources they contain. Such sensors include a mid-wave infrared imaging system capable of measuring temperature differences on observed objects
or to look at Earth and track asteroids near the planet. The idea for a spacecraft to be equipped with a solar sail to use the solar wind for propulsion was described by the late astrophysicist Carl Sagan four decades ago. ecause it has a constant acceleration,
which involved all the planets in the Solar system getting pummelled by comets and asteroids for two or three hundred million years.
< Back - Next >
Overtext Web Module V3.0 Alpha
Copyright Semantic-Knowledge, 1994-2011