Loktak Protocluster: A 12.6-Billion-Year-Old Discovery Named After a Manipur Lake

Overview

A Manipuri astrophysicist, Ronaldo Laishram, led an international team that discovered a galaxy protocluster 12.6 billion years old. It is named the Loktak Protocluster after Manipur’s famous Loktak Lake. The structure existed when the universe was only 1.2 billion years old.

A Proud Moment for Manipur and Science

Ronaldo Laishram is from Manipur. He is an astrophysicist. He led an international team of scientists. Together, they made a very important discovery. They found a galaxy protocluster. It is 12.6 billion years old. That means it existed when the universe was very young. The team named it the Loktak Protocluster. They named it after Loktak Lake, the largest freshwater lake in north-eastern India. This discovery puts Manipur’s name in the stars. It is a proud moment for India and for science.

What Is a Protocluster?

To understand this discovery, we first need to know what a protocluster is. A protocluster is an early-stage grouping of galaxies. Over time, it grows into a galaxy cluster. Galaxy clusters are huge. They are among the largest structures in the universe. A single cluster can contain hundreds or even thousands of galaxies. Gravity holds them together. A protocluster is like a baby galaxy cluster. It is the first step in forming these giant cosmic families.

The Loktak Protocluster: Key Features

The Loktak Protocluster is very special. It contains four connected concentrations of galaxies. These four groups are linked to each other. The scientists compared this structure to the floating phumdis of Loktak Lake. Phumdis are masses of vegetation, soil, and organic matter that float on the lake. They look like small islands. They are often connected to each other. In the same way, the four galaxy concentrations in the protocluster are connected. This is why the name Loktak is so fitting.

The protocluster is 12.6 billion years old. The universe itself is about 13.8 billion years old. So this structure formed when the universe was only about 1.2 billion years old. That is very early in cosmic history. Finding such an old and well-structured protocluster helps scientists understand how galaxies formed and grew.

Who Is Ronaldo Laishram?

Ronaldo Laishram is from Manipur. He is a researcher at the National Astronomical Observatory of Japan (NAOJ). He led the international team that made this discovery. He used powerful telescopes to observe very distant parts of the universe. His work shows that talented scientists can come from anywhere. A small state in north-eastern India has given the world a big discovery. Ronaldo Laishram is an inspiration for young students who dream of studying the stars.

How Was the Protocluster Discovered?

The discovery was not easy. It needed very powerful telescopes. The team used two major telescopes. One is the Subaru Telescope. It is an 8.2-metre optical-infrared telescope. It is located in Hawaii, USA. The other is the James Webb Space Telescope (JWST). JWST is a space-based infrared observatory. It was launched in 2021. It is the most powerful space telescope ever built. By combining data from both telescopes, the scientists were able to see the distant protocluster. Their findings were published in The Astrophysical Journal Letters, a very respected scientific journal.

Why Is This Discovery Important?

This discovery is important for several reasons.

First, it adds a named high-redshift structure to the study of