Scaling the Cosmos
This is the correct order of celestial objects from largest to smallest.
Star/Galaxy/Planet/Universe
the universe, galaxy, star, and planet?
Stars are primarily composed of these two specific gases.
Hydrogen and Helium
This is the 3rd planet from the Sun
Earth
A light-year is a unit of distance equal to this many trillion kilometers.
9.5 trillion km OR 6 trillion miles
This is the specific name given to our home galaxy
Milky Way
This object is considered larger than a galaxy
The Galaxy
Besides its composition, a star's color is a direct revelation of this characteristic.
It's surface temperature
Planets in a solar system are defined by the fact that they travel in orbit around this type of object.
Star
It takes approximately this long for light from the Sun to reach the surface of the Earth.
8 minutes
This specific layer of the atmosphere is responsible for protecting the Earth from harmful radiation.
Ozone layer
Between a planet, the Sun, a red supergiant star, and a red giant star, this one is the smallest.
Planet
True or False: Stars change color and brightness over time
True
This is the largest object found within our solar system
The Sun
If a star is 3 light-years away from Earth, it will take the light from that star this long to reach us.
3 years
What 3 things are comets made out of?
A group of objects described as having 200 billion stars and being elliptical in shape is most likely this.
Galaxy
To calculate a star's absolute magnitude, an astronomer needs to know the star’s distance from Earth and this other type of magnitude.
Apparent magnitude
Rather than being a giant or a dwarf, the Sun is accurately described as this size of star.
A Medium Star
Between the distances of 2.1 ly, 950,000 km, 9.5 trillion km, and 1 million ly, this one is the longest.
1 million light years
A shooting star is not a star, it is actually a ________
metoer
This force is responsible for keeping the millions or trillions of stars in a galaxy from moving away from each other.
Gravity
Based on scientific charts (one of the graphs we looked at yesterday!), there is this type of relationship between a star's surface temperature and its absolute magnitude.
inverse relationship
This phrase correctly describes a planet: "any one of the primary bodies that..."
orbits a star
How far away is the farthest man made object from Earth? The Voyager launched in 1977
What 2 places are most comets from?
The Oort cloud and the Kuiper belt