Yes. Typically one looks to the sky to view Neptune.
There have been no astronauts that have gone to Neptune. Nor is there any space exploration projects or programs called Neptune that I am aware of.
There have , as of yet , been none .
No. Astronauts have never been anywhere near any astronomical bodies except Earth and the Moon.
by using a space capsule
None. No astronaut has gone farther than the moon. Neptune is murch farther away. Only one unmanned probe has visited Neptune: Voyager 2.
it is too far out and it is too cold and astronauts don't have enough oxygen
Neptune is the eight planet from the sun
Look on Wikipedia unless you know the answer.-Acaheny & Ausia
Look on Wikipedia unless you know the answer.-Acaheny & Ausia
nothing , there is no unsustainable life that we know of on Neptune
You would look like a corpse. Life cannot be supported on Neptune.
You can see Neptune with a small telescope or with a good pair of binoculars any time except whenever the Earth and Neptune are on opposite sides of the Sun. So for nine months out of the year, you will be able to see Neptune - as long as you know where to look. It has nothing to do with leap years.