How does a comet differ from an asteroid?

Answer Comets consist of material similar to dirty snow and rock at the center. As a comet moves close to the sun, a long tail appears to be trailing behind the comet. Asteroids have no tail no matter how... Read More »

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The Effects of a Comet Hitting the Earth?

Comets are composed of frozen gases, water and dust. They often travel along irregular orbits around the sun, losing particles and debris as they get closer to the sun and begin to warm. This debri... Read More »

How to Survive a Super Comet Hitting Earth?

A large comet could come from the outer reaches of the solar system at very short notice. See how you could survive a comet impact like the one that killed the dinosaurs.

What was the year that the earth last saw halley's comet?

Halley's Comet was last visible from earth in 1986 and is predicted to return in 2061. Halley's Comet has reappeared every 74 to 79 years since 240 B.C. The comet was named after the English astron... Read More »

In 2000 NASA placed a satellite in orbit around an asteroid Consider a spherical asteroid with a mass of 8.001015 and a radius of 9.50 What is the speed of a satellite orbiting 4.90 above the surface?