Early Astronomy
The time required for Earth to orbit once around the Sun.
a year
closest star to Earth
the sun
When the moon’s shadow appears on Earth’s surface
solar ecplipse
this planet has the most visible rings
Saturn
name of space exploration program
Apollo
roughly the amount of time required for the moon to orbit once around the Earth
a month
Hydrogen and Helium
Occurs when the moon moves into Earth’s shadow
lunar ecplipse
the hottest planet
Venus
to place a person on the Moon
goal of the Apollo program
The time required for Earth to rotate once on its axis
a day
a large ball of gas held together by gravity with a core so hot nuclear fusion occurs
a star
The motion of one object around another
revolution
Jupiter
this mission ended on the moon
Apollo 11
A group of visible stars that form a pattern when viewed from Earth
constellations
the process that occurs when the nuclei of several atoms combine into one, larger nucleus. Nuclear fusion releases a great amount of energy that powers stars and makes it shine. It happens in the Core.
Nuclear fusion
why don't we have lunar eclipses monthly?
the moon's orbit is slightly tilted
red spots on Jupiter
storms
the capsule caught fire and the astronauts all died tragically
Apollo 1
the average distance between Earth and the Sun (about 150 million km). It is used to compare distances in the solar system.
Astronomical Unit
huge bubbles of gas ejected from the corona. Their material can sometimes reach Earth causing a radio blackout or malfunction in a satellite
Coronal mass ejections
these have higher high tides and lower low tides
Neap tides
Mercury, Venus, Earth, Mars
inner planets
new space program