Do planets cast shadows?

Question

Do planets cast shadows?

Answer 1

Of course they do.  A lunar eclipse occurs because the moon has passed into Earth's shadow.  

Answer 2

Yes. An example would the a lunar eclipse - the Earth is between the sun and the moon, and the Earth casts it's shadow on the moon.

Answer 3

Yes of course.  The earths' shadow cast on the moon is called a lunar eclipse.

Answer 4

Yes, but because the sun is a very large light source, compared to the size of the planets, the shadow of a planet is a short cone.  

Answer 5

Yes. As has been pointed out when the Moon is eclipsed, that is the Earth's shadow. The Earth's shadow can also been seen from many vantage points during reasonably clear sunsets. Wait till the sun just goes down, and the horizon is pink all around (the Belt of Venus.) As the light continues to fade, the pink area will dim, but below it to the west a dark shadowed area will begin the rise. As the light fades you can actually see the shadow of the earth rising as the sun gets further below the horizon, you've likely seen it many times but didn't realize what it was:

http://www.atoptics.co.uk/atoptics/earsh...

http://www.galaxyimages.com/earthshadow....

Answer 6

Yes, everything that is not transparent can cast a shadow.  A lunar eclipse is when the moon enters earth's shadow.

With even small telescopes, you can also see the eclipses of the four Galilean satellites of Jupiter.

And if you look at the Voyager images of Saturn, you can see where the rings, on the "far side" of the sun, appear to disappear, because they are in Saturn's shadow.