Download Place in Space

Place in Space
By Taylah Williams
What is a light year?
Q1:The fastest thing that we know of is light which travels at a
speed of 186,000 miles or 300,000 kilometres per second in empty
space. Light can travel about seven times around Earth in one
second. Astronomers use the speed of light to measure how far
away things are in space. They use light years. A light year is the
distance that light can travel in one year. In one year light travels
about 9,460,000,000,000 kilometres. So, this distance is 1 lightyear.
What is a galaxy
Q2: A galaxy is a system of stars, dust, and gas held together by gravity. Our solar
system is in a galaxy called the Milky Way. Astronomers have photographed millions
of galaxies through telescopes. The most distant galaxies ever photographed are as
far as 10 billion to 13 billion light-years away. Galaxies range in diameter from a few
thousand to a half-million light-years. Small galaxies have less than a billion stars.
Large galaxies have more than a trillion.
Arp’s Galaxy
Baade’s galaxy a and b
What is the nearest star apart from the sun visible star to the
earth?
Q3:Sirius is the nearest visible star to earth, also known as the Dog Star,
is the brightest star in the sky. Its name comes from the Greek word for
scorching.
In order of brightness the three brightest stars seen from Australia
Q4:
#1 Sirius:Sirius is the nearest visible star to earth, also known as the
Dog Star, is the brightest star in the sky. Its name comes from the
Greek word for scorching.
#2 Canopus: Named either for an ancient city in northern Egypt or the
helmsman for Menelaus, Canopus is the second brightest star in the
sky.
#3 Rigel Kentaurus:
Rigel Kentaurus, also known as Alpha Centauri, is the third brightest
star in the sky. Its name means foot of the centaur.
Second-largest constellation in sky. Bright star Spica. Cluster of galaxies. Bright quasar.
Zodiac Constellation.
Q6:Second-largest constellation in sky. Bright star Spica. Cluster of galaxies.
Bright quasar.
Spica star
What is a star? What is a star made of?
Q5: A star is ball of hydrogen and helium with enough mass that it can
sustain nuclear fusion at its core. Our sun is a star, but they can come in
different sizes and colours.
Bibliography
http://space.about.com/od/stars/tp/brighteststars.htm
http://www.kidsastronomy.com/academy/lesson110_assignment2_1.htm
http://www.universetoday.com/guide-to-space/stars/what-is-a-star/
http://www.nasa.gov/worldbook/galaxy_worldbook.html
http://homepage.mac.com/kvmagruder/bcp/zodiacal/zoo.htm
http://www.howstuffworks.com/question94.htm