What is the biggest star in the universe?

It's difficult to determine the exact size of stars since they are so far away, but we can measure them based on their brightness, temperature, and distance from Earth. The largest known star in the universe is UY Scuti, which is a red supergiant star located in the Scutum constellation.

UY Scuti has a radius of around 1,700 times larger than the Sun and is around 5 billion times larger in volume. If it were placed in the center of our solar system, its surface would extend beyond the orbit of Jupiter. Its size is so immense that it would take a commercial airplane over 1,000 years to fly around its circumference.

UY Scuti is not only the biggest star we know of, but it is also one of the brightest. However, it is not visible to the naked eye since it is located over 9,000 light-years away from us.

The largest known star in the universe is UY Scuti. It is a red hypergiant star located in the constellation Scutum. It has an estimated radius of 1.188 billion kilometers, or 1,700 times the radius of the Sun. If UY Scuti were placed at the center of our solar system, its photosphere would extend beyond the orbit of Jupiter.

UY Scuti is a very unstable star and is thought to be in the process of dying. It is expected to explode as a supernova in the near future.

Here are some other facts about UY Scuti:

• It is a variable star, meaning its brightness changes over time.
• It is one of the most luminous stars in the Milky Way galaxy.
• It is a red supergiant, which means it is a very large, cool star.
• It is located in the constellation Scutum, which is Latin for "shield."
• It is about 9,500 light-years from Earth.
• It is one of the most massive stars known.
• It is one of the most luminous stars known.
• It is one of the most unstable stars known.
• It is one of the most interesting stars known.