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They are always lined up, but they are sometimes also lined up with the Sun so that all three are in a line. That is called opposition, when the Earth is in the middle, or superior conjunction when the Sun is in the middle. One of each happens about every 2½ years.
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What is it called when the Sun Earth and Mars line up?
The Apocalypse
Earth is between witch planets?
Earth is between Venus and Mars. Well, not really; but the orbit of Earth is between the orbits of Venus and Mars. Venus, Mars and Earth never actually "line up".
Has anyone ever been on Mars?
No. The only body outside the earth that humans have ever landed on is the moon. When Mars is as close to Earth as it can ever get, it's about 200 times farther away than the moon is.
Why does it take 325 million miles from earth to mars when the earth to sun in only 93 million miles?
Because spacecraft don't travel in a straight line from Earth to Mars, as it would take too much energy. Instead they go on long eliptical transfers to meet up with where Mars will be at a later time.
Why is the lunar eclipse not frequent?
Because the sun, Earth and moon rarely ever line up EXACTLY in a straight line.
How many months do astronauts have to stay on mars before they can return home?
After astronauts arrive at Mars they will need to wait 15.4 months for the Earth and Mars to line up right before they launch In order to make it back home.
When do all the planets line up with the sun?
All the planets never lined up, but it was reported once that mercury, Venus, Earth, Mars, Jupiter and Saturn were lined up together.
Why does Mars have crators?
Mars has craters because the atmosphere is too thin for meteors to burn up in, (as most do before they hit the earth). There are also craters on Mars, because there is almost no erosion on Mars, as there is on earth to cover up the evidence of impact.
How many Mars' make up earth?
About 3
What is the Mars oppostion and what is its significance?
The "opposition" means that Mars is exactly opposite the sun in our sky.That means:-- Mars is due south in the sky ... or pretty close to it ... at 12:00 midnight.-- Sun, Earth, and Mars are lined up in a single straight line.-- Mars and Earth are the closest together they'll be until the next opposition.Unless you're an amateur stargazer, a planetary astronomer, or a member of the Mars Rover team,it doesn't have much significance.
How did the astronaut feel about going to mars?
Hard to say. No one has ever been to Mars yet.
When did the first person walk on mars?
No one has been to Mars yet. Elon Musk's SpaceX plans to send the first people there around 2024.
