Science, asked by mona8354, 1 year ago

How do we determine the amount of dark matter in elliptical galaxies?

Answers

Answered by Deegenius

Astronomers look at the size and amount of visible material. They then figure out how much gravity it takes to hold the galaxy together, always greater than the observed mass, and attribute the rest to dark matter.

Previous Question

Next Question

Similar questions

English, 6 months ago

Fill in the gapes er field , seen , and , inventing , make , carry, never , always, achieved, thirsl, curiosity , know. Man has a great ......... for knowledge. He is ........ satisfied with what he has known and .......... he wants to known more.......... more. This .......... to know more has inspired him to...

Chemistry, 6 months ago

convert 2 moles of Hygrogen gas (H2) into no. of atom...

Geography, 6 months ago

What are anticyclones...

Science, 1 year ago

How do we measure distance to galaxies and stars/planets?

Science, 1 year ago

What is the average number of stars an and diameter of a spiral galaxy?

Geography, 1 year ago

The axis of the earth help in marking parallel and meridian Give reason...

History, 1 year ago

Write the condition of children in mid 18th century of children and women...

Math, 1 year ago

The amount of petrol in a tank is twice of that in another tank. If we draw out 25 liters from the first and add it to the other the amount of petrol in both tanks will be the same. Find the amount of petrol in each tank now?