After the Big Bang came the earliest galaxies. Due to the expansion of the universe, these galaxies are receding away from us. This causes their emissions to be redshifted (shifted towards longer ...

Astronomers have found a massive galaxy at redshift 3.449, roughly 11.5 billion years in the past, that has essentially ...

Dark matter remains one of the most intriguing components of the cosmos, making up about 27% of the universe's total mass-energy content. It cannot be seen directly, yet its presence is inferred ...

Alfredo has a PhD in Astrophysics and a Master's in Quantum Fields and Fundamental Forces from Imperial College London.View full profile Alfredo has a PhD in Astrophysics and a Master's in Quantum ...

Rotation curve of the typical spiral galaxy M 33 (yellow and blue points with errorbars) and the predicted one from distribution of the visible matter (white line). The discrepancy between the two ...

A study proposes dark matter, not a black hole, at the Milky Way's centre The dark matter core model explains star motion and galaxy rotation together Sagittarius A has long been considered a black ...

A massive galaxy that appeared less than two billion years after the Big Bang does not rotate on itself. This specimen, named XMM-VID1-2075, contradicts all astronomers' expectations. According to ...