06 December 2021
Astronomers find a galaxy with no dark matter
... a thousand times fewer stars. Because of this characteristic AGC 114905 is classified as an ultra-diffuse dwarf galaxy, with the name “dwarf galaxy” referring to its luminosity and not to its size. When visualised on a graph showing the distance...
24 May 2016
Astronomers find ultra diffuse galaxy heavy in dark matter
... kilogram of ordinary material, VCC 1287 contains 3 tonnes of dark matter. Ultra diffuse galaxies (UDGs) have the sizes of giant galaxies but the luminosities of dwarf galaxies and it is these properties that have helped UDGs stay hidden for so long...
07 December 2020
New Gaia data measures Solar System's acceleration
... could signify a near-collision between the Milky Way and the Sagittarius dwarf galaxy that took place in our galaxy’s more recent past. The Sagittarius dwarf galaxy is a satellite galaxy of the Milky Way, that contains four globular clusters. It has...
04 January 2019
Merger with the LMC spells doom for our Solar System
... yet out on whether the nearby Canis Major Dwarf Galaxy is closer than the LMC). The LMC only... measurements of the LMC have revealed a bit of a problem. This once dwarf spiral galaxy is actually teeming with the unseen dark stuff – up to twice as much...
September 2017
Telescope targets enigmatic deep space mystery
...is in the form of diffuse hot plasma between galaxies. Studying these missing baryons observationally has remained a challenge...been found to repeat and has been localised to a dwarf galaxy three billion light years away, opening up possibilities for ...
08 February 2017
Bridge between the Magellanic Clouds discovered
... and are useful in studying the history of these dwarf galaxies. Gaia has greatly simplified studying the Magellanic Clouds, ...stream, which is a stream of stars formed when a dwarf galaxy or a star cluster (a satellite) feels the tidal force ...
