Melania Trump called her husband intensely loyal to family during a widely watched speech Monday night at the Republican National Convention. But she isn't his first wife. Of Donald Trump's three marriages, his longest marriage was to Ivana Trump, the mother of his three oldest children. Their daughter, Ivanka Trump, was scheduled to introduce her father Thursday night before he gave his formal presidential nomination acceptance speech.
Space Shuttle Columbia (NASA Orbiter Vehicle Designation: OV-102) was the first space-rated Space Shuttle in NASA's orbiter fleet.olumbia returned to space on January 12, 1986, with the launch of STS-61-C. The mission's crew included Dr. Franklin Chang-Diaz, as well as the first sitting member of the House of Representatives to venture into space, Bill Nelson. The next shuttle mission, STS-51-L, was undertaken by Challenger.
Curium-242 and curium-244 are used in the space program as a heat source (from the heat they generate as they undergo radioactive decay) for compact thermionic and thermoelectric power generation. Curium has not been found to occur naturally; it was the third transuranium element to be synthesized.