Boomerang Nebula: The Coldest Place in the Universe Explained

According to the current set of data, the Boomerang Nebula is the coldest location in space as it has an estimated temperature of about -272°C (or just 1 Kelvin). The Boomerang Nebula is situated around 5 thousand light-years away from Earth in the constellation Centaurus, lying in the position that is even colder than the Cosmic Microwave Background (CMB) that is, the weak radiation left after the Big Bang.

The intense cold of the Boomerang Nebula is attributed to the fact that the gas from the dying star is spreading very fast.

What is the Boomerang Nebula?

The Boomerang Nebula is the coolest known place in the universe, with an expected temperature of about -272°C (around 1 Kelvin).

The nebula is located about 5,000 light-year away from Earth, in the Centaurus constellation.

The Boomerang Nebula is cooler than CMB, the weak radiation from the Big Bang.

The nebula is extremely cold due to the fast expansion of the gas ejected by a dying star, which makes it one of the most interesting astronomical objects ever seen.

What Makes the Boomerang Nebula So Chilly?

The nebula’s remarkable coldness is attributed to fast-moving gas.

The dying star in its center is releasing a lot of gas at speeds of around 500,000 kilometers per hour. This gas is released into the universe at a very high speed, experiencing cooling from adiabatic expansion.

Thus, the Boomerang Nebula’s temperature drops below that of the Cosmic Microwave Background, which is about 2.7 Kelvin.

How Cold Is the Boomerang Nebula?

The temperature of the Boomerang Nebula is believed to be around,

• About -272°C
• Around 1 K

In comparison with the following temperatures,

Some of the place which holds low temperatures.

• Boomerang Nebula: -272°C
• Cosmic Microwave Background: -270.45°C
• Absolute Zero: -273.15°C
• Vostok Station, Antarctica: -89.20°C

Overall, the Boomerang Nebula is much colder than any naturally existing place on Earth.

A comparison with Antarctica

The coldest temperature ever taken on the planet was recorded at Vostok Station located in Antarctica, with a measurement of -89.2°C.

This can be compared to Antarctica

• Boomerrang Nebula: -272°C
• Vostok Station: -89.2°C

This indicates that the Boomerrang Nebula’s temperature is around three times cooler in terms of deviation from 0°C.

Finding the Boomerrang Nebula

Discovery of the Boomerrang Nebula took place in 1980 by astronomers,

• Keith Taylor
• Mike Scarrott

Initially, observations made from ground-based telescopes in Australia indicated that there was an object in the shape of a boomerang owing to the presence of dust and gas around it.

Later observations resulted from the use of Hubble Space Telescope services which were able to show the real hourglass shape of this nebula in 2003.

Why Does It Have a Unique Bow-Tie Shape?

The shape of the nebula can be attributed to,

• Very rapid bipolar gas flows
• Intense winds produced from the dying central star
• The dust that surrounds the star that redirects gas into two lobes

Together these forces create the hourglass or bow-tie shape that is so characteristic of this nebula.

Interesting Facts

• This object is considered the coldest natural object existing at the end of the universe.
• It is even colder than Cosmic Microwave Background.
• The object can be found in the Centaurus constellation, which is located around 5,000 light-years away.
• It is made from a dying star that resembles a sun.
• At the beginning, it had a boomerang-like shape but in reality, it is a bow tie or hourglass nebula.
• Gas from the object is emitted with about 500,000 km/h velocity.
• The temperature is about 1 K above zero.