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.
The Hubble Space Telescope (HST) is a space telescope that was launched into low Earth orbit in 1990, and remains in operation.With a 2.4-meter (7.9 ft) mirror, Hubble's four main instruments observe in the near ultraviolet, visible, and near infrared spectra.ubble was funded in the 1970s, with a proposed launch in 1983, but the project was beset by technical delays, budget problems, and the Challenger disaster. When finally launched in 1990, Hubble's main mirror was found to have been ground incorrectly, compromising the telescope's capabilities.