Mystery of Missing Dark Matter Deepens

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Text, News from the Universe June 23 2021
Mystery of Missing Dark Matter Deepens. June 23 2021. Simulation Credit: NASA/GSFC, NCSA
Dark matter, though unseen, is understood to make up most of the universe into play a big role in galaxy formation.
In 2018, a team of astronomers found a diffuse dwarf galaxy with very little dark matter.
Some scientists challenged the findings, saying the calculations were incorrect
The original science team set out to get better measurements with NASA's Hubble Space Telescope.

Scientists used Hubble to study the galaxy's red giant stars, which have a standard peak brightness.
Calculations show that the galaxy is even further than originally thought: 72 million light-years from Earth
These results indicate that the galaxy has 1/400th the amount of expected dark matter.
How the galaxy formed remains a mystery.
This news was brought to you in part by the Space Telescope Science Institute in Baltimore, MD