History of Space Travel
This powerful telescope was sent into space in 1990.
Hubble Space Telescope
all of space and everything in it
the universe
Main sequence stars have this happening at their core that creates an enormous amount of energy.
nuclear fusion
The most dangerous type of radiation in the electromagnetic radiation spectrum.
gamma rays
These appear in the night sky when a piece of rock is burning up as it falls through our atmosphere.
meteor
Several astronauts landed and explored here in the Apollo missions.
the moon
the distance light travels in 365 days
light year
This is the early stage of a star's formation.
protostar
telescopes that use lenses and mirrors
optical telescopes
small bodies of rock found mainly between the orbits of Mars and Jupiter
Many countries worked together to begin construction on this structure in space in 1998.
International Space Station
galaxy that has a bulge in the middle and arms that spiral out like pinwheels
spiral
Stars will form out of huge cloud of dust and gas in space called a ___________.
nebula
These telescopes have curved reflective discs.
radio telescopes
This is cold dust and ice that has a trail of light behind it as it gets closer to the sun.
comet
These spacecrafts started going into space in 1981. They took off like a rocket and landed like a plane.
space shuttles
rounded, slightly flattened galaxies with mainly old stars and very little gas or dust
eliptical
One of the last stages of a smaller star burning out is a slightly glowing core of the star about the size of a planet called a ________.
white dwarf
The safest type of radiation on the electromagnetic radiation spectrum.
radio waves
average distance from the center of the sun to the center of the Earth
astronomical unit (au)
These were the first living things sent up into space.
fruit flies
small galaxies with young stars and lots of dust and gas for new stars to form
irregular
huge explosion that happens towards the end of a huge star burning out
supernova
space crafts that carry scientific instruments to collect and transmit data without a human crew
space probes
Moving away from the sun, name the planets in the correct order.
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune