Alex HeBRRRling ❄️
NASAToday marks our namesake Edwin Hubble’s birthday! 🎂
Our telescope is named after him, and so is the Hubble Constant – the rate at which our universe expands.
Learn more in this new Hubble Science video!
#Hubble
Madison@nasa excellent video, I knew Hubble's observations were responsible for knowing the expansion but never heard of the Hubble constant, thanks!