Universe's Expansion Rate - Giant Elliptical Galaxy NGC 1453

Universe’s Expansion Rate Still Hard to Pin Down

The Universe’s expansion rate, the Hubble constant, is vital to understanding the Cosmos’ origin and fate. Discover how the latest technique for measuring the Hubble constant sheds new light on the past and future. (5:15 min read)

Massive Stars Forming in Tarantula Nebula

Massive Stars: Can They Form on Their Own?

Massive stars produce the heavier elements from which we're all made. Find out how the Hubble Telescope is shedding new light on where they came from. (4:30 min read time)