Scientists Detect a Key Life-Related Molecule in Space for the First Time

For decades, scientists have searched the Universe for one special molecule: glycine, the simplest amino acid and one of the basic building blocks of life. Glycine is important because amino acids are essential for proteins, which are necessary for life on Earth. Surprisingly, although glycine has been found in meteorites, comets, and asteroid samples, astronomers have never been able to clearly detect it in interstellar space.

Now, a major breakthrough may bring researchers one step closer.

A team led by astronomer Duan has announced the first robust detection of methyl carbamate, a complex organic molecule closely related to glycine, in a distant star-forming region. The discovery was made using the powerful Atacama Large Millimeter/submillimeter Array (ALMA), one of the world’s most advanced radio telescope systems.

This discovery is exciting because methyl carbamate could act as a new “chemical clue” that helps scientists understand how amino-acid-related molecules form in space long before planets are born.

A Missing Piece in the Puzzle of Life

The origin of life remains one of the biggest mysteries in science. Many researchers believe that some of the chemical ingredients for life may have formed in space billions of years ago and were later delivered to young planets through comets, asteroids, and meteorites.

Astronomers have already detected hundreds of complex organic molecules in giant clouds of gas and dust where stars and planets form. These regions, called hot molecular cores, are rich chemical laboratories.

However, glycine has remained frustratingly elusive.

Scientists have spent decades searching for it in the interstellar medium — the vast space between stars — using increasingly sensitive telescopes. Yet every claimed detection has later faced uncertainty or criticism.

This raised an important question:
If glycine exists in meteorites and comets, why is it so difficult to detect in space?

Researchers now think the answer may lie in understanding not just glycine itself, but an entire family of related molecules.

The Search Beyond Glycine

Instead of searching only for glycine, scientists began investigating molecules that share the same chemical formula but have different structures. These are known as isomers.

One important family is called the C₂H₅O₂N isomer family. It includes glycine, glycolamide, methyl carbamate, and several other complex molecules connected to prebiotic chemistry.

Studying these molecules can reveal how chemistry works inside star-forming regions.

Scientists wanted to know whether these molecules form mainly because they are chemically stable, or because specific reactions in space favor their creation.

For years, many astrochemists relied on something called the Minimum Energy Principle. According to this idea, the most stable molecules should naturally become the most abundant in space.

But observations have increasingly shown that space chemistry does not always follow simple thermodynamic rules.

Instead, chemical reactions may depend more on fast, pathway-specific processes driven by radiation, dust grains, temperature changes, and radical chemistry.

The new detection of methyl carbamate strongly supports this second idea.

A Historic Detection with ALMA

The research team focused on a hot molecular core known as G358.93-0.03 MM1, a massive star-forming region packed with dense gas and complex molecules.

Using ALMA’s highly sensitive 1 mm observations, the scientists identified ten clear rotational transitions belonging to methyl carbamate.

This allowed them to confirm the molecule’s presence with high confidence.

The team measured a column density of:

$$(4.21\pm 0.84)\times {10}^{15}{\text{ cm}}^{-2}$$

and an excitation temperature of:

                               204±10 K

These measurements show that methyl carbamate exists in surprisingly large amounts within the hot core.

In fact, it is now the most abundant member of the C₂H₅O₂N isomer family detected in this source so far.

The researchers also searched for glycine and other related isomers but found no direct evidence for them. Instead, they established upper limits on their abundances.

Even though glycine remains undetected, the discovery of methyl carbamate provides a valuable observational anchor for studying amino-acid-related chemistry in space.

Why This Discovery Matters

This detection is important for several reasons.

First, it proves that highly complex prebiotic molecules can form efficiently inside star-forming regions before planets even exist.

Second, the abundance pattern observed in the C₂H₅O₂N family does not match predictions from thermodynamic equilibrium models.

If the Minimum Energy Principle controlled the chemistry, scientists would expect different molecules to dominate.

Instead, the results suggest that kinetic chemistry — meaning the actual reaction pathways occurring on dust grains and in gas clouds — plays the dominant role.

This changes how researchers think about chemical evolution in space.

Chemistry on Cosmic Dust Grains

The team believes methyl carbamate likely forms on the surfaces of tiny interstellar dust grains.

These dust grains act like miniature chemical laboratories.

According to the proposed model, methyl carbamate forms when two radicals combine:

• CH₃O (methoxy radical)

• NH₂CO (carbamoyl radical)

During the warm-up phase of star formation, these radicals become mobile on icy grain surfaces and react with each other.

The resulting molecule is then released into space as temperatures rise.

Interestingly, the abundance of methyl carbamate appears closely linked to methanol and formamide, two molecules already known to participate in prebiotic chemistry.

This correlation supports the idea that these compounds share connected chemical origins.

A New Window Into the Origins of Life

The discovery of methyl carbamate is more than just the identification of another space molecule.

It provides scientists with a powerful new tool for studying the chemical pathways that may eventually lead to amino acids and other life-related compounds.

Researchers now have stronger evidence that complex organic chemistry begins very early during star formation.

That means young planetary systems could inherit rich supplies of prebiotic molecules long before life itself emerges.

The findings also suggest that glycine may still be hiding in space, waiting for future telescopes and more advanced observational techniques to reveal it.

With next-generation observatories and improved laboratory measurements, scientists hope to finally solve the mystery of interstellar amino acids.

The Bigger Picture

This breakthrough highlights the incredible chemical richness of the cosmos.

Space is not empty. It is filled with active chemistry capable of producing surprisingly complex molecules under extreme conditions.

Every new molecular detection helps scientists reconstruct the long chain of events that may connect interstellar clouds to living planets.

The first confirmed detection of methyl carbamate now stands as an important milestone in that journey.

And perhaps most importantly, it reminds us that the ingredients for life may be far more common across the Universe than we once imagined.

Reference: Chunguo Duan, Fengwei Xu, Jun Kang, Qian Gou, Xuefang Xu, Laurent Pagani, Jiaxin Du, Xi Chen, "First Interstellar Detection of Methyl Carbamate: A New Observational Anchor for Glycine Chemistry", ApJL, 2026. https://arxiv.org/abs/2605.07159