The Solar System
The belief that the universe started off no larger than a dot, then exploded.
Big Bang Theory
The natural tendency of an object to resist changes to its state of motion.
Inertia
The coolest stars are this color.
Red
The apparent motion of an object against distant background stars and best used to measure the distances to nearby stars.
Parallax
The Kennedy Space Center is located here in Florida.
Cape Canaveral
Plasma layer of the sun.
Photosphere
Chunk of rock or dust smaller than asteroids outside of the atmosphere.
Meteoroid
The hottest stars are this color.
Blue
He began to observe that planets did not move in a circle around the sun.
Tycho Brahe
This has given scientists the opportunity to study the most distant objects in our solar system.
Hubble Space Telescope
Outermost layer of the sun.
Corona
When entering Earth's atmosphere, the friction of the air creates a streak of light from this.
Meteor
The sun is this size.
Medium-sized
The phases of the moon, starting with New moon.
New Moon, Waxing Crescent, First Quarter, Waxing Gibbous, Full Moon, Waning Gibbous, Third Quarter, Waxing Crescent
This is why astronomers must make claims about objects in space exploration.
Large distances in space that are not easily observable.
He was an ancient Greek scientist who first developed a heliocentric model.
Aristarchus
His calculations proved that the shape of a planet’s orbit is an ellipse, not a circle.
Johannes Kepler
Absolute brightness is the measure of the true, intrinsic luminosity of a celestial object. These 2 things are needed to calculate the absolute brightness of a star.
Apparent brightness and distance from Earth
The distance light travels in about 1 year is known as this.
Light-year
These are reasons Cape Canaveral, Florida has been chosen as a launch site for space exploration.
The rotation of the Earth helps it launch over the Atlantic Ocean and debris will fall into the water instead of the land.
These are the layers of the sun.
Core, Radiative zone, Convection zone, Chromosphere, Photosphere, Corona
He said Earth’s rotation and revolution around the sun explained stars moving
Nicolaus Copernicus
After a star dies, the gravity of the remaining mass can be so strong that it pulls the gases inward, packing it into a smaller and smaller space.
Black Hole
Order the objects in space from smallest to largest, beginning with star and ending with universe.
Star, Star System, Star Cluster, Galaxy, Universe
An optical device that uses a glass lens at the front to bend and focus incoming light to form an image at the rear eyepiece.
Refracting telescope