Today's 10 Must-See Photos: 3-7-2013

This NASA Earth Observatory photo of the day for March 7, shows examples of three types of storms. Thunderstorms are the smallest, tropical cyclones are significantly larger, and extra-tropical cyclones are the largest.  

This image of the Earth's horizon was tweeted by  astronaut Chris Hadfield from the International Space Station on March 6. He wrote "Tonight's Finale: Scandinavia on the horizon, far to the north of the Space Station's orbit. pic.twitter.com/jBnjNqYEoV"

This photo of a crater was tweeted by Canadian astronaut Chris Hadfield from the International Space Station on March 7. He wrote, "Tswaing Meteorite Crater, just north of Pretoria, South Africa. I once gave a lecture standing on its salty floor. pic.twitter.com/u9QYix1OqQ"

A llama seeks shelter next to an abandoned school bus at Cox Farms on March 6 in Centreville, Va.

This NASA image of the day for March 7 is taken from NOAA's GOES-13 satellite on March 6, 2013, and shows a winter storm hitting the U.S. mid-Atlantic region.

This photo of Myrtle Beach was tweeted by Canadian astronaut Chris Hadfield from the International Space Station on March 7. He wrote, "Myrtle Beach, South Carolina - one of the legendary name resort destinations in the US. Looks inviting! pic.twitter.com/DAzECzEosn"

Members of the San Antonio Living History Association fire muskets as they take part in a pre-dawn memorial ceremony to remember the 1836 Battle of the Alamo and those who fell on both sides, Wednesday, March 6, 2013, in San Antonio. 

This photo of Bornholm Island in Denmark was tweeted by astronaut Chris Hadfield from the International Space Station on March 6. He wrote, "Bornholm island, Denmark, a rocky rectangle in the Baltic Sea. pic.twitter.com/JZ6d2JsKtz"