Solar Week - Ask a Question

Come here during Solar Week (next one: March 22-26, 2021) to interact. To post a question, click on your area of interest from the topics below, and then click on the "Ask New Question" button. Or EMAIL or tweet or plant in Answer Garden your question about the Sun or life as a scientist to us -- and watch for it to appear here.  You can also visit our FAQs (frequently asked questions). In between Solar Weeks in October and March, you can view all the archives here.

PrevPrev Go to previous topic
NextNext Go to next topic
Last Post 10/24/2008 5:36 AM by  Emilia Kilpua
sun on mars
 1 Replies
You are not authorized to post a reply.
Author Messages



10/24/2008 4:49 AM

    Jessica A (Fx) 5th grade

    How much sunlight reachs mars, is like on earth?

    Emilia Kilpua

    New Member

    New Member

    10/24/2008 5:36 AM

    Hi Jessica!

    Planets in the solar system receive the less sunlight the further they are away from the Sun. More rigorously the amount of the sunlight is inversely proportional to the square of the distance from the Sun.

    Mars is further away from the Sun than the Earth so Mars receives less sunlight than the Earth. At the Earth the amount of sunlight received is about 1362 W/m^2 while on Mars the average amount of sunlight is about half of that, 600 W/m^2.

    How bright the Sun will look at the planet's surface depends also on the composition of the planet's atmosphere. For example the atmosphere of Venus is very thick and it reflects a large part of the sunlight. Mars on the other hand has a thinner atmosphere than the Earth.

    You are not authorized to post a reply.

    Twitter Feed

    Scientist Leaderboard

    Name # of replies
    Multiverse skin is based on Greytness by Adammer