What is space in simple words?

Space, also known as outer space, is the near-vacuum between celestial bodies. It is where everything (all of the planets, stars, galaxies and other objects) is found. On Earth, space begins at the Kármán line (100 km above sea level). This is where Earth’s atmosphere is said to stop and outer space begins.

Why is space important?

Space also provides earth with valuable metals, rare objects and precious materials that can be used for medical research. Space is playing a valuable role in saving lives. If NASA stopped exploring our universe, we would not know important facts about space and our solar system.

What should I write about in space?

Ten Space Writing Topics

• Moon Base. Have you ever wondered what it would be like living on the moon?
• Space Stations. Assign your children to write a report about space stations.
• Journey to Mars.
• Should Pluto Be a Planet?
• Life of the Sun.
• Type of Stars.
• Is there Life Out There?
• What Would Alien Life Look Like.

What is a fact about space?

The space between galaxies is not completely empty but has an average of one atom per cubic meter. There are an estimated 100-400 billion stars in our galaxy, the Milky Way. The universe is observed to be 13.8 billion years old and has been expanding since its formation in the Big Bang.

What is the most important thing in space?

Astronauts must have oxygen, food, water, and rest. These needs are usually simple to meet on Earth; to meet these needs in space is very complicated. The gases in space cannot support human life. In fact, most of space contains no gases at all—it is what scientists call a vacuum.

What do we need to go to Mars?

If you want to send a spacecraft all the way to Mars, first you’ll need a fast rocket to escape the pull of Earth’s gravity. The heavier your spacecraft, the more powerful your rocket needs to be to lift off. Next, make sure you launch at the right time. Mars and Earth orbit the sun at different speeds and distances.

How do we learn about space?

Things in space which release or reflect light, like stars or planets, can be seen either with the naked eye or with telescopes. By looking at that light, scientists can either directly tell where objects in space are, or at least can make deductions about their locations.

What is the rarest thing in space?

Now astronomers have spotted a bizarre star that may prove to be one of the rarest objects ever, with maybe as few as five or six of them in the galaxy. The object in question is known as J005311, located in the constellation Cassiopeia about 10,000 light-years from Earth.

Is wood rarer than diamond?

but wood is a complex organic structure and compared to its diamonds is simple. In the whole universe, wood is rarer than diamonds.

Can we travel to other galaxies?

The technology required to travel between galaxies is far beyond humanity’s present capabilities, and currently only the subject of speculation, hypothesis, and science fiction. However, theoretically speaking, there is nothing to conclusively indicate that intergalactic travel is impossible.

Can God travel faster than light?

A few years ago, a group of physicists posited that particles called tachyons travelled above light speed. It seems, so far, that no object has been observed that can travel faster than the speed of light. This in itself does not say anything at all about God.

Can humans travel faster than light?

So will it ever be possible for us to travel at light speed? Based on our current understanding of physics and the limits of the natural world, the answer, sadly, is no. So, light-speed travel and faster-than-light travel are physical impossibilities, especially for anything with mass, such as spacecraft and humans.

Which is faster than light?

Tachyons are hypothetical particles that travel faster than light. According to Einstein’s special theory of relativity – and according to experiment so far – in our ‘real’ world, particles can never travel faster than light. Taken together, all these virtual particles make up the quantum vacuum.)

How can we travel faster than light?

Tachyons. In special relativity, it is impossible to accelerate an object to the speed of light, or for a massive object to move at the speed of light. However, it might be possible for an object to exist which always moves faster than light.

What happens if you travel faster than light?

Special relativity states that nothing can go faster than the speed of light. If something were to exceed this limit, it would move backward in time, according to the theory.

Is a supernova faster than light?

Supernovae are the death throes of a massive star that has reached the end of its life. These expanding shells are known as supernova remnant. While these ejecta move fast (for us humans) with speeds of about 20 000 km/h, they are much slower than the speed of light – which is 300 000 km/s.

Has anyone been in a Blackhole?

Fortunately, this has never happened to anyone — black holes are too far away to pull in any matter from our solar system. But scientists have observed black holes ripping stars apart, a process that releases a tremendous amount of energy.

How is black hole formed?

A black hole can be formed by the death of a massive star. When such a star has exhausted the internal thermonuclear fuels in its core at the end of its life, the core becomes unstable and gravitationally collapses inward upon itself, and the star’s outer layers are blown away.

Can we create a black hole?

In principle, a black hole can have any mass equal to or above about 2.21×10−8 kg or 22.1 micrograms (the Planck mass). To make a black hole, one must concentrate mass or energy sufficiently that the escape velocity from the region in which it is concentrated exceeds the speed of light.

What happens if a person goes into a black hole?

If you jumped into the black hole feet first, the gravitational force on your toes would be much stronger than that pulling on your head. Each bit of your body would also be elongated in a slightly different direction. You would literally end up looking like a piece of spaghetti.

What is the importance of a black hole?

A black hole’s “surface,” called its event horizon, defines the boundary where the velocity needed to escape exceeds the speed of light, which is the speed limit of the cosmos. Matter and radiation fall in, but they can’t get out. Two main classes of black holes have been extensively observed.

Where do things go in a black hole?

It is thought that the matter that goes into a black hole gets crushed into a tiny point at the center called a “singularity”. That’s the only place that matter is, so if you were to fall into a black hole you wouldn’t hit a surface as you would with a normal star. Once it’s there, it’s there.

How dangerous are black holes?

These black holes are dark most of the time, but when their gravity pulls in nearby stars and gas, they flare into intense activity and pump out a huge amount of radiation. Massive black holes are dangerous in two ways. If you get too close, the enormous gravity will suck you in.