Dark matter is a form of matter that accounts for around 85 per cent of matter in the universe. It comprises of particles that do not absorb, reflect or emit light. These particles’ existence is known only through the effect they have on objects that are observed directly.
Researchers have used data from Hubble Space Telescope to confirm that the ultra-diffuse galaxy known as NGC 1052-DF2 lack dark matter. The new study confirms the 2018 discovery made by astronomers from the United States and Canada. The focus of the new research was on aging red giant stars on the outer parts of the DF2 galaxy.