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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.
Astronauts can use technologies such as radar and lidar to detect invisible objects in space. These systems use radio waves or laser pulses to bounce off objects and detect their presence based on the reflected signals. Additionally, astronauts can rely on instruments such as infrared cameras to detect heat signatures of objects that may not be visible to the naked eye.
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What are some tools that astronauts use to explore space?
Astronauts use tools such as space suits equipped with life support systems, robotic arms for handling objects outside the spacecraft, and scientific instruments like spectrometers and telescopes to explore space. They also rely on spacecraft like the International Space Station and rovers to aid in their exploration.
A device used to detect radio waves from objects in the space?
A radio telescope is used to detect radio waves emitted from objects in space. These telescopes collect and amplify these signals to create images and study various celestial phenomena such as supernovae, pulsars, and other cosmic events. The information gathered helps astronomers to better understand the universe.
Which of the following is not a property of optical telescopes?
Ability to detect radio waves is not a property of optical telescopes. Optical telescopes are designed to detect and focus visible light to form images of distant objects in space. Radio telescopes, on the other hand, are specifically designed to detect and study radio waves emitted by celestial objects.
Do astronauts sleep in space?
Yes, they do.
What is meant by a celestial globe?
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.
How do astronauts describe the position of objects in space?
Weightlessness.
Is there really invisible walls in outer space?
No. Are there undetectable walls in outer space? Possibly. We can't detect them.
What are the equipments astronauts use in space?
astronauts use: space suits invisible braces edible toothpaste athletic shoes baby food mashed up food powdered drinks
What can detect radio waves from objects in space?
A radio telescope.
How are radio waves used to detect objects in space?
radar
What is a device used to detect radio waves from objects in space?
Radio Telescope
How do scientist study invisible radiation from objects in space?
They study visible light by using optical telescopes.
Why is the canadarm a valuable tool?
It allows the astronauts of the Space Shuttle to manipulate large objects in and outside the cargo bay.
What types of astronauts are there on a space mission?
trained space astronauts
Astronauts are--who fly in space?
Astronauts are people who fly in space
How do astronomers detect objects in space?
Astronomers use a variety of methods to detect objects in space, including telescopes that observe different wavelengths of light (such as visible, infrared, and radio waves), sensors that detect particles like cosmic rays and neutrinos, and gravitational wave detectors. They analyze the data collected from these observations to identify objects like stars, planets, galaxies, black holes, and more.
How does weight change in space?
In space, weightlessness occurs because there is no gravity acting on objects. As a result, objects and astronauts float freely without feeling the sensation of weight. This is different from mass, which remains constant regardless of location.
