nov 20, 1889 - Hubble (1889-1953)
Description:
He discovered that the universe is expanding. Approximate date of discovery: 1935.Photo credit: https://previews.123rf.com/images/ugchannel/ugchannel1604/ugchannel160400094/56242367-edwin-hubble-the-american-scientist-vector-portrait.jpg
Added to timeline:
Date:
nov 20, 1889
Now
~ 135 years ago