Who was the first human to orbit Earth?
Yuri Gargarin
An area of land that is saturated with water for at least part of the year
wetland
Any man made object placed in orbit around a body in space that sends data about our planet back to ground stations
artificial satellite
The collection of large and small bodies that orbit our central star, the sun
solar system
An explosive release of energy that can extend outward as far as the sun's outer atmosphere
a solar flare
This astronomer observed 4 moons of Jupiter, a supernova, and sunspots.
Galileo
Another word for salinity
salt
This space equipment transports astronauts and supplies back and forth from Earth to space
space shuttle
Why do some stars appear brighter than other stars?
Some stars seem brighter because they are closer to Earth
what the sun is mostly made of
hydrogen and helium
Which astronomer attempted to measure the relative distances to the moon and sun? He also originally proposed the heliocentric model.
Aristarchus
Where a river flows into an ocean
estuary
This piece of space technology has mechanical arms used to gather rock samples
lander or rover
The color of the hottest stars
blue
Huge loops of relatively cool gas that extend outward from the photosphere
prominences
This astronomer discovered that ellipses fit planetary motions better than exactly circular motions
Who is Kepler?
The production of a glowing light
Bioluminescence
What spacesuit feature provides oxygen to an astronaut
life support pack
A gigantic explosion in which a high mass star throws its outer layers into space, but its core remains
supernova
the outer atmosphere of the sun
corona
Who developed a detailed geocentric model of the solar system used by astronomers for 14 centuries and came up with "wheels-on-wheels"?
Ptolemy
This ecosystem covers over 70% of earth's surface. It is made up of several parts: coastal, open, and deep
Ocean or marine ecosystem
This piece of space technology is more suited to the long term study of a planet or moon
orbiter
The actual brightness of a star
luminosity
the layer of the sun through which energy is transferred away from the core by radiation
radiative zone