Robert Kraft, American astronomer and academic (b. 1927)
Robert Paul "Bob" Kraft (June 16, 1927 – May 26, 2015) was an American astronomer. He performed pioneering work on Cepheid variables, stellar rotation, novae, and the chemical evolution of the Milky Way. His name is also associated with the Kraft break: the abrupt change in the average rotation rate of main sequence stars around spectral type F8.
2015May, 26
Robert Kraft (astronomer)
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Events on 2015
- 29Apr
2015 Baltimore protests
A baseball game between the Baltimore Orioles and the Chicago White Sox sets the all-time low attendance mark for Major League Baseball. Zero fans were in attendance for the game, as the stadium was officially closed to the public due to the 2015 Baltimore protests. - 3May
Charlie Hebdo shooting
Two gunmen launch an attempted attack on an anti-Islam event in Garland, Texas, which was held in response to the Charlie Hebdo shooting. - 14Jul
New Horizons
NASA's New Horizons probe performs the first flyby of Pluto, and thus completes the initial survey of the Solar System. - 20Jul
Cuba-United States relations
The United States and Cuba resume full diplomatic relations after five decades. - 14Aug
Cuba-United States relations
The US Embassy in Havana, Cuba re-opens after 54 years of being closed when Cuba-United States relations were broken off.