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Read the Fine Print
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(Complete Item Description)
- Abstract:
At the end of 2003, there were 2600 known Near Earth Asteroids (NEAs), and of these 691 are brighter than absolute magnitude, which is taken to correspond to a diameter of 1 kilometer or more. Of these, 131 are classed as PHAs (potentially hazardous asteroids) larger than 1 km. This site describes the potentially devastating effects of a collision between Earth and a large meteor or asteroid. It also describes the Spaceguard Survey, which is an initiative to locate and catalog as many potentially hazardous NEAs as possible. Other parts of the site include: a news archive, bibliography, catalog of near earth objects, image gallery, and links to related sites.
- Subject:
- Science and Technology
- Grade Level:
- Secondary
- Collection:
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NASA
Read the Fine Print
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(Complete Item Description)
- Abstract:
In this lesson, students learn some basic facts about asteroids in our solar system. The main focus is on the size of asteroids and how that relates to the potential danger of an asteroid colliding with the Earth. Students are briefly introduced to the destruction that would ensue should a large asteroid hit, as it did 65 million years ago.
- Subject:
- Mathematics and Statistics, Science and Technology
- Grade Level:
- Primary, Secondary
- Collection:
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TeachEngineering
No Strings Attached
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Read the Fine Print
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(Complete Item Description)
- Abstract:
This activity poses the question: What would happen if a meteor or comet impacted Earth? Students simulate an impact in a container of sand using various-sized rocks, all while measuring, recording and graphing their results and conclusions. Then students brainstorm ways to prevent an object like this from hitting the Earth.
- Subject:
- Mathematics and Statistics, Science and Technology
- Grade Level:
- Primary, Secondary
- Collection:
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TeachEngineering
Read the Fine Print
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(Complete Item Description)
- Abstract:
Find an Asteroid, Comet or Other Moving Solar System Object. Follow the motions of known solar system objects. Search to discover new ones. There are countless asteroids and comets orbiting the Sun. Plenty for everyone to track and map. All are interesting. Some astronomers are searching for ones that are in Near Earth Orbit and other astronomers search for dim ones way out by the orbits of Pluto and beyond.
- Subject:
- Science and Technology
- Grade Level:
- Primary, Secondary
- Collection:
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Hands-On Universe (HOU)
Read the Fine Print
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(Complete Item Description)
- Abstract:
This compilation video contains visualizations of Earth and Space Sciences resulting from supercomputer models. The excerpted visualizations include: Ocean Planet, El Nino, Ozone 1991, Clouds, Changes in Glacier Bay, Alaska, Biosphere, Lunar Topography from the Clementine Mission, Musculoskeletal Modeling Dynamic Simulations, Simulations of the Breakup and Dynamical Evolution of Comet Shoemaker-Levy 9, Convective Penetration in Stellar Interiors, Topological Features of a Compressible Plasma Vortex Sheet: A Model for the Outer Heliospheric Solar Wind, R-Aquarii Jet, The Evolution of Distorted Black Holes, Rayleigh-Taylor Instability in a Supernova, Galaxy Harassment, N-Body Simulation of the Cold Dark Matter Cosmology.
- Subject:
- Science and Technology
- Grade Level:
- Secondary, Post-secondary
- Collection:
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NASA GSFC Scientific Visualization Studio
No Strings Attached
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(Complete Item Description)
- Abstract:
The breakup of comet Shoemaker-Levy 9 due to its gravitational interaction with Jupiter in July, 1994 is simulated using a swarm model. In this simulation, the comet is modeled as an initially spherical distribution of 16,384 particles. The particles interact with the tidal field of Jupiter and with each other through inter-particle gravitation and collisions. All simulations were performed on the Maspar MP-2 at NASA-GSFC.
- Subject:
- Science and Technology
- Grade Level:
- Secondary, Post-secondary
- Collection:
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NASA GSFC Scientific Visualization Studio
No Strings Attached
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(Complete Item Description)
- Abstract:
The breakup of comet Shoemaker-Levy 9 due to its gravitational interaction with Jupiter in July, 1994 is simulated using a swarm model. In this simulation, the comet is modeled as an initially spherical distribution of 16,384 particles. The particles interact with the tidal field of Jupiter and with each other through inter-particle gravitation and collisions. All simulations were performed on the Maspar MP-2 at NASA-GSFC.
- Subject:
- Science and Technology
- Grade Level:
- Secondary, Post-secondary
- Collection:
-
NASA GSFC Scientific Visualization Studio
No Strings Attached
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