# Hubble Law For Kids5 min read

The Hubble Law is a scientific law that states that the farther away an object is from Earth, the faster it is receding from us. This law was named after Edwin Hubble, who discovered it in 1929.

Hubble’s Law is explained by the theory of relativity. According to this theory, the closer an object is to a planet, the faster it moves around that planet. The farther away an object is from a planet, the slower it moves around that planet.

This law can be used to calculate the age of the universe. Scientists can use the Hubble Constant, which is the speed at which an object is receding from Earth, to calculate the distance to that object. They can then use the speed of light to calculate how long it took the light from that object to reach us. This calculation tells scientists the age of the universe.

## What does Hubble’s law state in simple terms?

Hubble’s law is a scientific principle that states that the farther away a galaxy is, the faster it is receding from us. This law was first proposed by astronomer Edwin Hubble in 1929, after he observed that the universe is expanding.

Hubble’s law is based on the theory of general relativity, which states that the fabric of space-time is expanding. This means that the distance between galaxies is increasing over time.

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Hubble’s law can be expressed in two ways:

– The recession velocity of a galaxy is proportional to its distance from Earth.

– The Hubble constant is the rate of expansion of the universe, and it is measured in kilometers per second per megaparsec.

Hubble’s law has been tested and confirmed by countless observations of galaxies over the years. It is one of the most proven and well-tested laws in physics.

## What is the Hubble law used for?

The Hubble law is used to measure the expansion of the universe. It was named after Edwin Hubble who discovered it in 1929. The law states that the farther away a galaxy is, the faster it is moving away from us. This is because the universe is expanding.

## What did Hubble discover for kids?

What did Hubble discover?

In 1990, the Hubble Space Telescope was launched into orbit around Earth. For over two decades, it has been providing us with amazing images of the universe, including some of the earliest galaxies ever discovered.

Hubble has also helped us to better understand the universe’s expansion, and has even been used to study the atmospheres of planets outside of our solar system.

What’s more, Hubble has helped us to learn more about our own planet, including the existence of water on Mars!

So what exactly has Hubble discovered?

Quite a lot, actually!

## What is Hubble’s expansion law?

Hubble’s expansion law states that the universe is expanding at an ever-increasing rate. This law was first proposed by Edwin Hubble in 1929, after he observed that the light from distant galaxies was redshifted. This redshift is caused by the Doppler Effect, and can be used to determine the speed of objects moving away from us.

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Hubble’s expansion law is based on the observation that the universe is expanding uniformly in all directions. This means that the distance between galaxies is increasing at a constant rate.

Hubble’s expansion law is also supported by the cosmological principle, which states that the universe is the same in all directions. This principle is based on the observation that the universe looks the same in all directions, regardless of where you point your telescope.

Hubble’s expansion law has been confirmed by numerous observations, including the Cosmic Microwave Background Radiation (CMBR), which is the radiation left over from the Big Bang. The CMBR is uniform in all directions, and this can be explained by the expansion of the universe.

## How do you do Hubble’s law?

Hubble’s law states that the farther away a galaxy is from Earth, the faster it appears to be moving away from us. This law is named after Edwin Hubble, who discovered it in 1929.

Hubble’s law is based on the observation that the spectral lines of most galaxies are redshifted. This means that the light from the galaxies is shifted towards the red end of the spectrum. The farther away a galaxy is from Earth, the more its light is shifted towards the red end of the spectrum.

Hubble’s law can be explained by the theory of general relativity. According to general relativity, the space between galaxies is expanding. The galaxies are moving away from each other because they are being carried along by the expansion of space.

Hubble’s law can be used to measure the distance to galaxies. The redshift of a galaxy can be used to calculate its speed of recession. The distance to a galaxy can be calculated by multiplying its speed of recession by the time it took the light from the galaxy to reach Earth.

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## Who first discovered space?

Historians are still unsure who first discovered space, but there are many theories. Some say it was the ancient Greeks, while others believe it was the Chinese. However, the most likely candidate is Johannes Kepler, who first proposed the theory of elliptical orbits in the 17th century.

## Who first discovered galaxies?

Who first discovered galaxies?

Galaxies are huge collections of stars, dust and gas that orbit around a common center. They range in size from dwarf galaxies, which contain just a few million stars, to giants, which can boast billions of stars.

The first galaxies were discovered in the early 1920s by American astronomer Edward Pickering and his team of women astronomers, known as the Harvard Computers. Pickering and his team used a new technique called spectroscopy to analyze the light from distant stars. By studying the spectrum of light from a star, they could determine its chemical composition and temperature.

Pickering and his team used this information to create a “spectral classification” system for stars, which is still used today. They also used it to identify a new type of object in the night sky called a “galaxy.”

Since then, astronomers have discovered billions of galaxies, including our own Milky Way.