Air source heat pump (extracts heat from outside air) Airâair heat pump (transfers heat to inside air) Airâwater heat pump (transfers heat to a heating circuit and a tank of domestic hot water) Air-air heat pumps, that extract heat from outside air and transfer this heat to inside air, are the most common type of heat pumps and the cheapest.
Confidence votes 42.4K. The Hubble Telescope was named after Edwin Powell Hubble who was an astronomer that confirmed that there were galaxies other than our own Milky Way; the discoveries of other galaxies have been repeatedly confirmed by the observations of the Hubble Telescope.
This NASA photo shows the Hubble Space Telescope in May 2009 as Atlantis astronauts release it into space after its fifth and final overhaul. Hubble launched into space on April 24, 1990 and celebrated its 20th birthday in 2010.Credit: NASA.he Hubble is the first telescope specifically designed to be repaired in space by astronauts, while other space telescopes cannot be serviced at all. NASA scientists estimate that the telescope will only be able to keep taking pictures for five more years.