The horizon is closer so you would see your companions disappear below it if they walk far enough away on a flat plain. It's a bit like ships at sea - we see them disappear below the horizon - well on the Moon that horizon would be a bit closer if you can find a nice flat plain to stand in for the sea.
It's quite easy to work out the distance to the horizon:
How far away is the horizon? (Phil Platt)
Invaderxan has a nice blog post which does a comparison for the Moon:
How far can you see?
That article has this photo, helps compare the horizons:
See How far can you see?
He works out that for Earth you can see 4.66 km, on Mars 3.40 km , and on the Moon, 2.43 km.
And has a photograph comparing what the horizon looks like on all three places. On the Moon the horizon would be noticeably closer.
I think that's the main thing you'd notice.
If someone walked 5 km away from you on a flat plain, they'd disappear from view below the horizon. On Earth that's more like 10 kms.
It's quite easy to work out the distance to the horizon:
Invaderxan has a nice blog post which does a comparison for the Moon:
How far can you see?
That article has this photo, helps compare the horizons:
He works out that for Earth you can see 4.66 km, on Mars 3.40 km , and on the Moon, 2.43 km.
And has a photograph comparing what the horizon looks like on all three places. On the Moon the horizon would be noticeably closer.
I think that's the main thing you'd notice.
If someone walked 5 km away from you on a flat plain, they'd disappear from view below the horizon. On Earth that's more like 10 kms.
About the Author
Robert Walker
Writer of articles on Mars and Space issues - Software Developer of Tune Smithy, Bounce Metronome etc.Studied at Wolfson College, Oxford
Lives in Isle of Mull
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