Astronomy Mathematics
How many moons ( satellites) does Mercury have?
0
How many moons (satellites) does Venus have?
0
How long does it take Mercury to orbit the sun?
0.2 years
What is Mercury's radius and distance
0.38 & 0.4
What is Mars radius and distance?
0.53 & 1.5
What is Saturn's density?
0.7
What is Venus radius and distance?
0.95 & 0.7 au
How many moons does Earth have?
1
What percent of relative mass does earth have?
1
What is Earth's radius and distance?
1 & 1
How long does it take earth to orbit the sun?
1 year
What is Uranus Density
1.2
What is Jupiter's density?
1.3
What is Neptune's density
1.6
What is the percentage of time life has been on earth?
10
How massive is the sun compared to Jupiter?
1000 times bigger
A light year is?
10^18 centimeters
What is Jupiter's radius and distance?
11.8 & 5.2
How old is the universe?
13.8 billion
How many moons does Neptune have?
14
The number of stars in the universe is?
15 x 10^20
How many moons are there for each planet combined?
173
How many moons does Mars have?
2
What is the mass of Jupiter?
2 x 10^30
On any given clear cloudless night the naked-eye observer can see about how many stars?
2,000
How long does it take earth to rotate?
23 hours & 54 mins
What is the temperature of pluto?
230
How long does it take Venus to rotate?
243 days
How long does it take Pluto to orbit the sun?
250 years
How many moons does Uranus have?
27
The temperature of the universe, as measured by the cosmic microwave background is?
3
What is Uranus radius and distance?
3. ? & 19.2
What is Mars density?
3.9
What is Neptune's radius and distance?
3.9 & 30.1
What is Pluto's distance?
39.4 au
How long has life been on earth?
4 billion
The earliest evidence for life on Earth dates back to about ______ years ago?
4 billion
In order to reach the solar system, light from the nearest fixed star must travel for about how long?
4 years
An astronaut who travels to the nearest fixed star at the speed of light will require ____ to complete the journey
4.4 years
How old is the earth?
4.567 billion
How long has life been on land?
400 million
The approximate age of the earth in billions of years is?
5
How old is the sun?
5 billion
What is Venus density?
5.2 g/cm
What is Mercury's density?
5.4
What is Earth's density
5.5
How many moons does Saturn have?
62
Dinosaurs disappeared ______ years ago?
66 million
How many moons does Jupiter have?
67
The sun is eight light minutes from earth, while Saturn is about 10 astronomical units from the sun. How long does it take light to traverse the interplanetary distances from the sun to Saturn?
80 mintues
How long does it take Jupiter to rotate?
9 hours & 56 mins
What is Saturn's radius and distance?
9.42 & 9.6
Astronomical observations teach us that the age of the universe must be about?
several billion years