Solar System Objects
What is 1 AU?
The distance between the sun and the Earth.
What are the two types of space probes?
Orbiters and landers
What is the first phase of a star called
Protostar
What are the four shapes of galaxies?
Elliptical, irregular, spiral, quasar
What is round, orbits the sun, and has cleared out the region of the solar system along its orbit.
Planet
What do we commonly call a natural satellite?
a moon
Why do scientists have to use different types of telescopes?
to look at different types of waves
What does a planetary nebula become?
White dwarf
What is the theory that states that the universe formed in an instant, billions of years ago.
The big bang theory
What is energy that can travel in the form of waves?
electromagnetic radiation
Name the three layers of the sun, in order from innermost to outermost.
Core, Radiative Zone, Convection Zone
Who were the first humans to walk on the moon's surface?
Neil Armstrong and Buzz Aldrin
What does a supernova become?
Either a neutron star or pulsar
What is matter that does not give off electromagnetic radiation?
Dark matter
What is a large cloud of gas and dust containing an immense volume of material?
nebula
Name the three layers of the Sun's Atmosphere from innermost to outermost.
The photosphere, the chromosphere, the corona
About how large is the ISS?
the size of a football field
What do astronomers use to find a star's absolute brightness?
Distance from Earth and apparent brightness
What is our current estimate for how old the universe is?
between 13.77 and 13.82 billion years old
What is the blue-white hot core of a star that is left behind after its layers have expanded and drifted out into space?
White dwarf
What is responsible for intense heat and pressure in the Sun's Core?
Gravity
What was the first human made object to leave our solar system?
Voyager 1
What are five properties astronomers use to describe stars?
color, temperature, size, composition, brightness
Because both state that galaxies furthest from us are moving away faster than galaxies closest to us.
What is the brilliant explosion of a dying supergiant star?
Supernova