This diagram depicts the chemical structure of pyrimidine, a six-membered aromatic ring with two nitrogen atoms at positions 1 and 3 (highlighted in blue). The remaining positions are occupied by ...

Add Yahoo as a preferred source to see more of our stories on Google. The asteroid Ryugu, as seen by Japan's Hayabusa2 spacecraft on June 26, 2018. (CREDIT: JAXA) A rock measuring 900 meters is on a ...

Sugars essential for life were found for the first time alongside “space gum” on an asteroid hurtling towards Earth, indicating that our universe could be teeming with life, according to new research.

It's been two years since the Origins, Spectral Interpretation, Resource Identification, and Security-Regolith Explorer (OSIRIS-REx) spacecraft returned home with exactly 4.3 ounces (121.6 grams) of ...

Caltech researchers have identified a novel chemical reaction that could explain the formation of the building blocks of DNA and RNA, the molecules that encode all of life's functions. The work is an ...

The chemical synthesis of oligonucleotides (ONs) is central to modern molecular biology, diagnostics and nucleic acid therapeutics. While demand for high-quality ONs is increasing, the conventional ...

In the double helix structure of DNA, thymine forms a base pair with adenine through two hydrogen bonds. This specific pairing is known as complementary base pairing and is essential for the stability ...

For 50 years, scientists have debated whether the components of DNA — the molecule central to all life on Earth — could spontaneously form in space. A new analysis of a dozen meteorites found in ...