When the Hubble Space Telescope launched, one of its main goals was to measure the rate at which our universe is expanding. That rate is called the “Hubble Constant” – named after the astronomer Edwin Hubble, who contributed to the discovery of the universe’s expansion. However, the expected value of the expansion rate is different… Continue reading xx37-Expansion Rate: The Hubble Tension

The Hubble Space Telescope is many things. It’s an observatory, a satellite, and an icon of cultural and scientific significance – but perhaps most interestingly, Hubble is also a time machine. Hubble isn’t that far away, locked in a low-Earth orbit just a few hundred miles up that takes about 90 minutes to complete. But… Continue reading 18-Hubble: Our Cosmic Time Machine

Before modern telescopes, humans could only imagine what the surface of the sun and the planets looked like. Now advanced technology has made it possible to get in close, and take images of the Sun and the planets deep in our solar system. Now get ready to see the solar system as you’ve never seen… Continue reading 19-Real Images From Our Solar System

Dedicated 40 years ago, on February 14th 1984 at NASA Goddard’s Space Flight Center, the STOCC, or the Space Telescope Operations Control Center, operates the Hubble Space Telescope on its important mission. The Operations Team members at the STOCC continue to operate the telescope, capturing data and images of the cosmos for all of us… Continue reading 20-40 Years of Non-stop Operations – The Space Telescope Operations Control Center