exploring space
DESCRIPTION
Exploring Space. Arrangement of Universe. Earth. Our planet Diameter = 13,000 km or 8,000 miles Orbits the sun. Solar System. Contains Earth, 7 other planets, the sun, and other smaller bodies. Sun is a star Planets orbit the sun. Milky Way. Galaxy - PowerPoint PPT PresentationTRANSCRIPT
Exploring Space
Arrangement of Universe
Eartho Our planeto Diameter = 13,000 km
or 8,000 mileso Orbits the sun
Solar System Contains Earth, 7
other planets, the sun, and other smaller bodies.
Sun is a star Planets orbit the
sun.
Milky Way Galaxy It contains our solar
system and the stars we can see with our bare eyes.
It contains millions or billions of stars.
Universe Billions of galaxies Contains
everything in space and all the matter and energy in it.
Milky way is just one of the many billions of galaxies.
Galaxies extend in all directions.
Picture in the sky• Astronomers
have the sky mapped out like a road.
• The sky is divided into 88 areas named for a constellation.
Constellation• Group of stars that form a pattern.• Greek named many of the constellations for
animals and imaginary beings.• Stars in constellation are not really close to each
other.• They seem grouped from Earth, but many of the
stars are several light years away from each other.• We see different constellation due to Earth
rotating on its axis.
Polaris Fairly the brightest
star that we see. It is the star to
help locate North. If the north pole
extended into space this would be the star directly up above that point.
SatelliteAn object that
orbits a more massive object.
The moon is considered a satellite.
Ex. International space station.