Stars, Asteroids, Comets & Meteoroid
Published on Feb 04, 2016
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PRESENTATION OUTLINE
Thermonuclear fusion keeps a star from DYING.
Photo by alles-schlumpf
There are millions of stars and among
them several types of stars
Photo by NASA Goddard Space Flight Center
Stars live very long
Our sun as a middle-aged star has lived for 4.5 billion years
Photo by Stuck in Customs
star colour
- Lies on a spectrum of red, white, blue & inbetween
- Red stars are coolest; blue stars are hottest & white stars are inbetween
- Red stars live longest, white stars live a moderate life span and blue stars die quickly
Photo by kevin dooley
other than hydrogen and helium,
stars consist of oxygen, calcium, carbon silicon etc.
Photo by NASA's Marshall Space Flight Center
Binary stars are two stars with linked gravity.
Star clusters are similar but consict of more stars.
Photo by NASA's Marshall Space Flight Center
Solar eclipses occur when three celestial bodies aline; one is a star.
Photo by NASA Goddard Photo and Video
asteroids ARE MADE UP OF ROCK
THEY CAN RANGE FROM 10 YARDS, TO 310 MILES IN DIAMETER
Photo by NASA Goddard Photo and Video
asteroids don't emit
their own light, they reflect star light
Photo by NASA's Marshall Space Flight Center
an asteroid hitting earth
- The impact of any asteroid larger than 1 mile would cause natural disasters
- The impact of any asteroid larger than 2 miles would possibly destroy earth
comets have two parts
a coma: the main body, and a tail: an ice and dust trail
Photo by NASA's Marshall Space Flight Center
