Want to Weigh a Star? Use an Alien Planet's Moon

It's always been a

The new

It only works if the

If all those

"I often get

To date, astronomers

By measuring the

How it works

Computer models

Step-by-step

By measuring how the

Finally, scientists

This research will

  • Gallery:

Have a news tip, correction or comment? Let us know at community@space.com.