Lets say you're on Mars

[SkyHog]

So, when things are JUUUUST right, Mars can be seen from Earth. It appears to be red, usually, since it is, in fact, colored red.

So, lets say you're standing on Mars, and things are JUUUUST right and you can see Earth. What color is earth? Blue? White, like a star? Maybe green?

 

[tonycondon]

probably bluish white

 

[alaskaflyer]

http://www.msss.com/mars_images/moc/2003/05/22/R05-00763.gif

 

[SkyHog]

http://www.msss.com/mars_images/moc/2003/05/22/R05-00763.gif

LOL! I can't really tell....white, perhaps. Ooh, I'll try it with the lights out.

 

[fgcason]

1: Mars Reconnaissance Orbiter camera test while outbound looking back.
2: Spirit Rover's photograph of Earth

 

[wsuffa]

I thought this was going to be another spaceship-on-a-treadmill thread...

 

[fgcason]

I thought this was going to be another spaceship-on-a-treadmill thread...

Have you read up on the hassles of landing heavy equipment on Mars? Specifically the velocity/altitude deceleration gap issue between mach 5 and mach 1? Imagine your stall speed being below mach 1 where the gear extends for a sensible landing (parachute deployment and low velocity touchdown) and above that the gear is up and the belly is covered in superdooper industrial strength guaranteed instant stop velcro (or nasa ntsb terminology: high kinetic energy soil sample mode) Of course your engine won't quit and auto-throttle won't let you slow below mach 5 before touchdown. It makes the treadmill problem look like trivia.

 

[wby0nder]

1: Mars Reconnaissance Orbiter camera test while outbound looking back.
2: Spirit Rover's photograph of Earth

Thats freeking awesome

 

[mantakos]

http://www.msss.com/mars_images/moc/2003/05/22/R05-00763.gif

This is a monochrome image.
-harry

 

[Joe B]

Earth is visible from Saturn, here, as that little dot on the left just outside the bright main rings:

NASA calls it "pale blue".

 

[fgcason]

Thats freeking awesome

It truly puts things in proper perspective doesn't it?

 

[Geico266]

It truly puts things in proper perspective doesn't it?

I am in aw ever time I see pictures of other planets. The enormity of space is incomprehensible to my little mind.

How can this all be an accident?

 

[wsuffa]

Earth is visible from Saturn, here, as that little dot on the left just outside the bright main rings:

NASA calls it "pale blue".

Looks just like an annular treadmill