Occasionally a planet will pass directly between Earth and the face of the sun. WHich planets could do this and why?

How many complete orbits has Earth make in your lifetime? How many orbits has Mars made in your lifetime?

*I have no idea the answer to either, HELP!!!!!

With your first question, which planets are closer to the sun than the earth?

For the second, how old are you? The earth makes one orbit per year.

I searched Google under the key words "Mars orbit cycle" to get this information:

The Martian year is 1.88 tropical Earth years consisting of 668.59 Martian days (sols) or 686.98 Earth days. (This means that Mars only has a fraction of an orbit during each Earth year.)

In the future, you can find the information you desire more quickly, if you use appropriate key words to do your own search. Also see http://hanlib.sou.edu/searchtools/.

I hope this helps. Thanks for asking.

To determine which planets can pass directly between Earth and the face of the sun, we need to understand the concept of planetary transit. A transit occurs when a planet crosses directly in front of a star, as seen from a different planet (in this case, Earth). Based on this definition, only the inner planets – Mercury and Venus – can transit the sun as seen from Earth.

Mercury can transit the sun because it orbits closer to the sun than Earth does. However, due to the inclination of its orbit, Mercury's transits are relatively rare. They occur about 13 or 14 times per century, typically in May or November.

Venus can also transit the sun. These transits are even rarer and generally come in pairs separated by eight years with over a century between pairs. The last Venus transit occurred in 2012, and the next will take place in 2117.

Now, let's move on to the second part of your question. To determine how many complete orbits Earth has made in your lifetime, we need to know how old you are. Let's assume, for example, that you are 20 years old. Earth takes approximately 365.25 days to complete one orbit around the sun. So, in this case, the number of orbits Earth has made during your lifetime would be 20.

As for Mars, determining the number of orbits it has made in your lifetime follows the same logic. However, since Mars takes roughly 687 Earth days to complete one orbit, the calculation depends on how many Earth years old you are. If you provide your age, I can help you determine the approximate number of orbits Mars has made during your lifetime.