Space telescope to maintain. The Hubble Space Telescope was serviced by the Space Shuttle while many other space telescopes cannot be serviced at all. Space observatories can generally be divided into two classes: missions which map the entire sky (surveys), and observatories which focus on selected astronomical objects or parts of the sky. Satellites have been launched and operated by NASA, ISRO, ESA, Japanese Space Agency and the Soviet space program later succeeded by Roskosmos of Russia. As of 2018, many space observatories have already completed their missions, while others continue operating on extended time. However, the availability of space telescopes and
Space Shuttle: A Journey into Space will probably recognize "Space Shuttle" for the monumental achievement it is. Space Shuttle: A Journey into Space Space Shuttle: A Journey into Space is a space flight simulator game designed by Steve Kitchen for the Atari 2600 and published by Activision in . It is one of the first realistic spacecraft simulations available for home systems. "Space Shuttle" was adapted to the Atari 8-bit family and Atari 5200 by Bob Henderson (1984), then ported to the ZX Spectrum (1984), Commodore 64 (1984), Amstrad CPC (1986), and MSX (1986). The 1984 Activision Software catalog also mentions an Apple II version. The