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Asteroids, Comets & Meteors - NASA Solar System Exploration
Don’t let the name fool you. Our solar system’s small bodies – asteroids, comets, and meteors – pack big surprises. These chunks of rock, ice, and metal are leftovers from the formation of our solar system 4.6 billion years ago.
Why Comets Are Important - NASA Solar System Exploration
What Are Comets? * Comets are small, fragile, irregularly shaped bodies composed of a mixture of grains and frozen gases. They have highly elliptical orbits that repeatedly bring them very close to the Sun and then swing them deeply into space, often beyond the orbit of Pluto.
In Depth | Our Solar System - NASA Solar System Exploration
Introduction. The planetary system we call home is located in an outer spiral arm of the Milky Way galaxy. Our solar system consists of our star, the Sun, and everything bound to it by gravity – the planets Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune; dwarf planets such as Pluto; dozens of moons; and millions of asteroids, comets, and meteoroids.
Comet Team Biographies - NASA Solar System Exploration
Comet Team Biographies Dr. John T. Clarke. Dr. John Clarke is a research professor in the Space Physics Research Laboratory at the University of Michigan.
Directory | Solar System Ambassadors - NASA Solar System Exploration
Robert Berta has extensive experience presenting to children and adults, K-12th grade, junior college, and college level. He provides Scout Astronomy presentations and Astronomy Merit Badge Counselor presentations tailored to the age and experience level of the audience.
Stardust - NASA's Comet Sample Return Mission
Stardust Spacecraft to Continue Flying The Stardust-NExT will utilize the existing Stardust spacecraft to flyby Comet Tempel 1 in 2011, and observe changes in the comet since Deep Impact visited it in 2005.
Directory | Solar System Ambassadors - NASA Solar System Exploration
Scott was Director of Shiras Planetarium from 1973 until 2002. He is a retired public school science teacher with 29 years of experience. Scott has been an amateur astronomer for 45 years, which includes serving as President of the Marquette Astronomical Society.
Directory - NASA Solar System Exploration
Robert (Bob) Trembley is a lifelong amateur astronomer. He serves as a board member of the Warren Astronomical Society and a volunteer NASA/JPL Solar System Ambassador.
Technology For Studying Comets - NASA Solar System Exploration
NASA’s STARDUST Mission: Think SMALL in a Big Way Notes 65 4. Have students form teams of 3 or 4 and arrange desks accordingly. Each member has a role with specific responsibilities listed on their worksheets.
Stardust: Returning Comet Samples to Earth - NASA Solar System Exploration
In Greek and Roman times, comets were known as "hairy stars". Images taken with modern telescopes show them to be spectacular with a head (called the coma) up to ten times the diameter of Earth and complex tails that sometimes stretch away from the Sun for more than 150 million kilometers, the distance between the Earth and the Sun.
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