its impossible to explore stars they're millions of miles away years in fact
The Moon! The astronauts explored part of what is called "Hadley Rille".
it is too far out and it is too cold and astronauts don't have enough oxygen
Astronauts have travelled to lots of places in space like Neil Armstrong and Buzz Aldrin went to the moon and other astronauts have gone to lots of other moons like some of Saturn's moons also astronauts have been to the international space station.
12 men in total have walked on the moon and all were from the US.
A lot of people
Humans have only visited the moon so far....sorry to disappoint but we are observers.
They did not send astronauts to Pluto. Also, Pluto is a dwarf planet, not a dwarf star.
Astronauts of different countries working together typically communicate in English.
The effects of weightlessness on humans is explored during the work done by astronauts. This helps with advancements in medical and technological fields.
Astronauts pen for more detail see movie: "three idiots" (star: Amir Khan)
No. Betelgeuse is a star in the constellation Orion.
Stars are balls of burning gas. So, no, astronauts cannot land on stars, since they are so bright and are too hot.