As far as we know, there is no matter that is truly invisible. Some objects can be extremely hard to see, however, because they are black and tend to blend in with the black space behind them. Black holes and dark matter are two such things, and we only know they exist by observing their effects on the things around them. Both have significant gravitational effects, and it is from these that we learn about them. Imagine if you were walking down a hallway and bumped into something you couldn't see. Even if we couldn't observe anything about it directly, we can make pretty accurate guesses about it based on how it interacts with you, something we can measure. There may very well be invisible things we don't know about out there, but unless they interact with something we can see, we'll never know that they are there.
using space scope or getting in to outer space via a ship!!
A radio telescope
Yes, they do.
They carry it with them on board.
astronauts need a space shuttle too travel to space, they use MMU's ( Man Maneuvering Unit ) to walk around space, MMU's are chairs that astronauts attach to them to control their movements because space has no air so we can't move
The Celestial Globe (or sphere) is an imaginary sphere around our planet, earth. All objects in the sky and space, such as satellites, can be thought inside this invisible sphere.
Weightlessness.
No. Are there undetectable walls in outer space? Possibly. We can't detect them.
astronauts use: space suits invisible braces edible toothpaste athletic shoes baby food mashed up food powdered drinks
A radio telescope.
radar
A radio telescope
Radio Telescope
It allows the astronauts of the Space Shuttle to manipulate large objects in and outside the cargo bay.
They study visible light by using optical telescopes.
trained space astronauts
Astronauts are people who fly in space
Small objects that we can detect in space are all in the solar system and they all orbit the Sun and obey Kepler's laws of planetary motion, as do all the planets, asteroids etc.