Cold Dark Matter – Astronomy Now

Hubble finds evidence for widely held ‘cold dark matter’ theory

12 January 2020 Astronomy Now

Using the Hubble Space Telescope an eight gravitationally lensed quasars, researchers have found strong evidence for cold dark matter.

Record-breaking dwarf satellite galaxy of the Milky Way discovered

21 November 2016 Astronomy Now

An international team has found an extremely faint dwarf satellite galaxy of the Milky Way using the Hyper Suprime-Cam (HSC) on the 8.2-metre Subaru Telescope located at the Mauna Kea Observatory on Hawaii. Named Virgo I, the galaxy lies 280,000 light-years away in the constellation of Virgo. The galaxy may well be the faintest satellite galaxy yet found.

No. 3 Dark matter is ‘sticky’

3 January 2016 Keith Cooper

For years, dark matter seemed to do nothing. It had mass and therefore could influence space gravitationally, but there was no evidence of it interacting with anything else in the Universe in any other way, which made it incredibly frustrating to study. Then, in 2015, a breakthrough occurred.

Royal Astronomical Society’s National Astronomy Meeting 2015 – report 2

7 July 2015 Astronomy Now

In his second report from the Royal Astronomical Society’s National Astronomy Meeting 2015, Kulvinder Singh Chadha ponders the nature of dark matter and whether cosmic jets — jets of material from active galaxies travelling close to the speed of light — may correlate with dense regions of dark matter in the Universe.

Dragonfly’s compound ‘eye’ reveals very faint galaxy structure

26 May 2015 Astronomy Now

At CASCA 2015, Roberto Abraham from the University of Toronto describes the first results from the Dragonfly Telephoto Array — an innovative, multi-lens system designed to produce digital images of ultra-low surface brightness objects at visible wavelengths — that is at least ten times more efficient than its nearest rival.