Today's 10 Must-See Photos: 4-16-2013

Astronaut Chris Hadfield tweeted this photo of Boston from the International Space Station on April 15. He wrote, "Tonight's Finale: A somber Spring night in Boston. pic.twitter.com/eXiozObOKR"

Medical workers aid injured people at the finish line of the 2013 Boston Marathon following an explosion in Boston, Monday, April 15. 

Coors Field is blanketed with snow before a baseball game between the New York Mets and the Colorado Rockies, Monday, April 15, in Denver. The game was postponed by a heavy spring snowstorm. The teams will play a split-doubleheader Tuesday. 

This photo of a double rainbow over Washington State was tweeted by Richard G. Evans on April 15. He wrote, "Double rainbow all the way across the sky in Washington State pic.twitter.com/EosDDkZmRz"

The Eiffel Tower rises from behind blossoming flowers and trees in Paris, France, Tuesday, April 16. 

Israelis watch an air show during Independence Day in Tel Aviv, Tuesday, April 16. Israel is celebrating its annual Independence Day, marking 65 years since the founding of the state in 1948. 

Astronaut Chris Hadfield tweeted this photo of a lake from the International Space Station on April 16. He wrote, "This lake looks like it's burrowing its way across the landscape. pic.twitter.com/lazvAEsWfP"

Astronaut Chris Hadfield tweeted this photo of Montreal from the International Space Station on April 15. He wrote, "La ville de Montreal brille sur une nuit de printemps. pic.twitter.com/2RCIFHUPfd"