Dark energy is forcing the universe to expand. This new observatory may show us how 

 The Legacy Survey of Space and Time promises to be a game changer for dark energy explorers. Here's why. 

https://cdn.mos.cms.futurecdn.net/iDzwc8UCVhtqQ64gontSA3.jpg

https://www.space.com/rubin-observatory-legacy-survey-space-time-dark-energy-expansion