DNA is well-known for its double helix shape. But the human genome also contains more than 50,000 unusual knot-like DNA structures called i-motifs, researchers at the Garvan Institute of Medical ...

The locations of “knot-like structures” in the human genome ... but can also lead to disease. The double helix structure of DNA is so famous it serves as a sort of visual shorthand.

This color-composite image of the Helix Nebula was created from images ... Further out from the star and beyond the ring of knots, the red color from hydrogen and nitrogen is more prominent.

This Hubble mosaic is the highest resolution image ever made of the entire Crab Nebula, which is located 6,500 light-years away. These opaque, dark knots of gas and dust called "Bok globules" are ...