The 7 Strangest Trojan Asteroids Astronomy Book 1 Stephen S Alison Comet Halley
Download As PDF : The 7 Strangest Trojan Asteroids Astronomy Book 1 Stephen S Alison Comet Halley 
An asteroid is the name given to rocks or particles that orbit the sun. They can be tiny dust particles, or they can be hundreds of kilometers in diameter.
Most asteroids are located in what is known as the asteroid belt. This area between Jupiter and Mars contains many remnants of the gas and particles that resulted from the solar system’s formation over 4.6 billion years ago.
Ceres and Vesta are two of the largest proto-planets remaining intact since their formations. They both reside in the extensive zone between Mars and Jupiter together with many other smaller bodies, called the asteroid belt.
Dawn is a mission belonging to NASA’s Discovery Program. Its purpose is to explore main belt asteroids in order to yield insights into important questions about the formation and evolution of the solar system. Dawn's historic mission arrives at Vesta in the early morning hours of Saturday, July 17, 2012.
After scoping out Vesta, the Dawn spacecraft will journey on to Ceres, arriving in 2015.
Trojan asteroids follow a planet’s orbit. Trojans are held in the orbit at the planet’s Lagrangian points by the gravitational pull of two larger bodies. Jupiter has the largest number of Trojans, with the possibility of hundreds or thousands of asteroids located in its orbit.
Scientists have identified four asteroids in Mars’ orbit, and they recently discovered one asteroid that follows Earth’s orbital path. Scientists believe that Trojan asteroids are pulled into the orbit by the planet’s gravitational pull. The asteroids may also be pulled out of the orbit from another planet’s pull, or they could be knocked out by a collision.
Scientists recently discovered what they believe to be Earth’s first Trojan asteroid. It is currently called 2010 TK7, and they will gather more information before giving it a formal name. Little is known about 2010 TK7.
This is the story of seven of the solar system's strangest Trojan asteroids
Apophis The Asteroid that Could Smash into the Earth. Apophis, the Alleged Doomsday Rock was discovered on June 19, 2004. Some rocks have made notably close passes to Earth and the one that has most alarmed astronomers and the public alike is Apophis, which could smash into the earth sometime in 2029 or 2036.
Baptistina The Asteroid which was thought to have caused the extinction of Dinosaurs. Baptistina, one of the youngest families of asteroids was believed to have impacted Earth, causing the dinosaurs' extinction.
Ceres the biggest Asteroid in the Solar System. Ceres is the biggest asteroid in the Solar System, orbiting at an average distance of 413 million km from the Sun. After scoping out Vesta, the Dawn spacecraft will journey on to Ceres, arriving in 2015.
Hektor the Biggest Trojan Asteroid, was discovered in 1907. Hektor is not found in the main asteroid belt; instead, the dark, reddish body dominates as the biggest of Trojan asteroids stuck in Jupiter's orbit.
Kleopatra A Metal Dog Bone with Moons. Kleopatra has two moons, which were named Alexhelios and Cleoselene earlier this year. To boot, the metallic asteroid has an unusual dog-bone shape.
Themis Astronomers Find Water on Themis Asteroid’s Surface. Themis, a large main belt asteroid, stands out as the first and only asteroid known thus far to have ice on its surface.
Toutatis Asteroid Toutatis approaches Earth on December 12, 2012. Toutatis is one of the oddest space rocks. Toutatis' path through the solar system has it sweep close to Earth, but because the asteroid's orbit is chaotic, its exact path - and how close it might come to us - centuries from now cannot be well predicted.
Images & Photos - This latest revised version includes a number of photos and images courtesy of various sources including NASA, ESA and ESO.
The 7 Strangest Trojan Asteroids Astronomy Book 1 Stephen S Alison Comet Halley
If you have a budding astronomer.. this book is a good one for them to learn the basics of Asteroids, meteors, meteorites and comets. It goes into quite a bit of detail without being overly scientific.I do wish that they had included more photos.. but, they do give many websites for one to do their own research after reading.
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The 7 Strangest Trojan Asteroids Astronomy Book 1 Stephen S Alison Comet Halley Reviews
If you have a budding astronomer.. this book is a good one for them to learn the basics of Asteroids, meteors, meteorites and comets. It goes into quite a bit of detail without being overly scientific.
I do wish that they had included more photos.. but, they do give many websites for one to do their own research after reading.
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