* Astronomy

HMS Campbeltown at St. Nazaire on 28 March 1942
http://en.wikipedia.org/wiki/File:Bundesarchiv_Bild_101II-MW-3722-22,_St._Nazaire,_Zerst%C3%B6rer_%27HMS_Campbeltown%27.jpg

The first female to circumnavigate the globe, with James Cook, was 'The Goat' (? - 28 March 1772). 
http://en.wikipedia.org/wiki/James_Cook#Navigation_and_science

The Fabre Hydravion was a French experimental floatplane designed by Henri Fabre
http://en.wikipedia.org/wiki/Fabre_Hydravion

Wubbo Johannes Ockels (March 28, 1946 - May 18, 2014) was a Dutch physicist and a former ESA astronaut
http://en.wikipedia.org/wiki/Wubbo_Ockels

Patrick Young Alexander (28 March 1867 - 7 July 1943) was a British aeronautical pioneer 
http://en.wikipedia.org/wiki/Patrick_Young_Alexander

Jerome Jay Wolken (March 28, 1917 - May 10, 1999) was an American biophysicist 
http://en.wikipedia.org/wiki/Jerome_Wolken

Alexander Grothendieck (28 March 1928 - 13 November 2014) was a mathematician 
http://en.wikipedia.org/wiki/Alexander_Grothendieck

Arthur Joachim von Oettingen (28 March 1836 - 5 September 1920) was a Baltic German physicist
http://en.wikipedia.org/wiki/Arthur_von_Oettingen

Harold Melvin Agnew (March 28, 1921 - September 29, 2013) was an American physicist
http://en.wikipedia.org/wiki/Harold_Agnew

Jerome Isaac Friedman (born March 28, 1930) is an American physicist.
http://en.wikipedia.org/wiki/Jerome_Isaac_Friedman

Rev. Theodore Evelyn Reece Phillips (March 28, 1868 - May 13, 1942) was an English astronomer.
http://en.wikipedia.org/wiki/T._E._R._Phillips

Dinsmore Alter (March 28, 1888 - September 20, 1968) was an American astronomer and meteorologist.
http://en.wikipedia.org/wiki/Dinsmore_Alter

Gale Bruno van Albada (28 March 1912 - 18 December 1972) was a Dutch astronomer. 
http://en.wikipedia.org/wiki/Gale_Bruno_van_Albada

Hans Michael Maitzen (born 28 March 1943 in Graz) is an Austrian astronomer.
http://en.wikipedia.org/wiki/Hans_Michael_Maitzen

David Malin (born 28 March 1941) is a British-Australian astronomer and photographer.
http://en.wikipedia.org/wiki/David_Malin

GRB 110328A, a new class of GRB-like events, was first discovered by the Swift satellite on 28 March 2011.
http://astronomy.activeboard.com/t42175130/grb110328a/

On March 28, 2011, a supermassive black hole was seen tearing a mid-size star apart.
http://www.smh.com.au/technology/sci-tech/astronomers-catch-first-glimpse-of-star-being-consumed-by-black-hole-20110826-1jd23.html

SN 393 was an astronomical event that was reported by the Chinese in the year 393 CE. 
http://en.wikipedia.org/wiki/SN_393

Supernova 1993J was discovered on 28 March 1993 by F. Garcia in Spain.
http://en.wikipedia.org/wiki/SN_1993J

Extrasolar planet 4 Ursae Majoris b was discovered on the 28th March 2007 
http://en.wikipedia.org/wiki/4_Ursae_Majoris_b

Asteroid (2 Pallas was discovered in 1802
http://astronomy.activeboard.com/t13349284/pallas/

Asteroid (454) Mathesis was discovered by Friedrich Karl Arnold Schwassmann on March 28, 1900.
http://en.wikipedia.org/wiki/454_Mathesis