Big Bang
This 1927 astromoner had a big idea.
Who is George Lemaitre?
This is the distance the between the Earth and the Sun.
What is 93 million miles?
This is where stars form.
What is a nebula?
This is the measurement of how hot or cold something is.
What is temperature?
This is a star that suddenly increases greatly in brightness because of a catastrophic explosion that ejects most of its mass.
What is a supernova?
Edwin Hubble noticed this.
What is noticing other galaxies moving away from us?
Scientists measure the distance between stars by this.
What are light-years?
The energy released by fusion makes the star do this.
What is expand?
This is the temperature range for a blue star?
What is over 9,500 degrees Celsius?
This is what a nebula is.
What is a huge cloud of dust and air?
This is what the universe is still doing.
What is expanding?
These are groups of stars that make a pattern in the sky.
What are constellations?
This is what we call it when a super-giant collapses then explodes.
What is supernova?
68 light years away is how far this is from us.
What is The Big Dipper?
This is the center of a star that remains after it's outer layers have expanded into space.
What is a white dwarf?
These tiny particles formed together to make this tiny part of the galaxy.
What are atoms?
This is how bright a star really is.
What is absolute magnitude?
When a red giant collapses the outer layers of the star expand and form this.
What is a planetary nebula?
This is the distance Proxima Centauri is from Earth.
What is 4.3 light years away?
These are tiny particles that make up most kinds of matter.
What are atoms?
This is how old the universe is.
What is 13.8 billion?
This is how bright a star appears to be from Earth.
What is apparent magnitude?
after a large supernova the remaining material becomes this.
What is an invisible black hole?
This is the constellation The Big Dipper is a part of.
What is Ursa Major?
These are rapidly spinning neutron stars that give off pulses of radio waves.
What are pulsars?