There haven't been any probes sent to Eris.
No. Eris is much to far away to send astronauts there. We have not even sent any probes there. The only object astronauts have visited is the moon, which is much closer to Earth than any other object in space.
Nobody. The only place other than Earth where people have walked is the moon. Eris has only been observed through telescopes and has not even been visited by a space probe.
no there is no oxygen in space
they've only studied it from a distance
Saturn was discovered by ancient Greeks and Romans, so sorry no space crafts.
No
Voyager 2 is the only spacecraft to visited Neptune.
7
Spacecrafts have never visited Pluto, but the New Horizons mission is on its way there.
none with humans although some probes have
No. Eris is much to far away to send astronauts there. We have not even sent any probes there. The only object astronauts have visited is the moon, which is much closer to Earth than any other object in space.
No manned missions have gone farther away than the moon. If you mean space probes or satellites, I think three
Nobody. The only place other than Earth where people have walked is the moon. Eris has only been observed through telescopes and has not even been visited by a space probe.
Yes, many of them. But as far as anybody knows, every one of them was built on earth and launched from earth before it landed here.
no there is no oxygen in space
Never, Eris was explored only by telescopes.
Mission to Eris