U.S. space exploration history on U.S. stamps also the only space station NASA launched alone. The 100-ton space station was in Earth's orbit from 1973 to 1979 and it was visited by crews three times in 1973 and 1974. Circling 50 degrees north and south of the equator at an altitude of , Skylab had an orbital period of 93 minutes. There were a plethora of UV astronomy experiments done during the Skylab lifetime, as well as detailed X-ray studies of the Sun. The station was active until July 11, 1979, when it fell out of orbit. The 10-cent Skylab commemorative stamp first day of release took
Space program of the Philippines Philippine payloads such as micro- and nano-satellites as well as the establishment of a receiving station for the Global Navigation Satellite System" (GLONASS), Russia's alternative to American Global Positioning System (GPS) On October 29, 2018, the second satellie under the PHL-Microsat program, the Diwata-2, was launched directly into orbit from the Tanegashima Space Center in Japan. The Department of Science and Technology–Science Education Institute (DOST-SEI) launched the first Philippine Space Science Education Program (PESSAP) in 2004, to promote science and technology, particularly space science, as a field of study to the Filipino youth. Student-researchers and science faculty from St. Cecilia's