Time Service at US Naval Observatory, 1915
Time Service at US Naval Observatory, 1935
Time determination at US Naval Observatory
US Naval Observatory time signalling antennas
US Naval Observatory time signaller, 1913
US Naval Observatory refractor telescope, 19th century
15-inch equatorial telescope at US Naval Observatory
Transit circle observations, 1924
Photoheliograph, 1888
IBM 650 computer at US Naval Observatory, 1961
Burnham's micrometer, 19th century
300-foot Green Bank radio telescope, 1962
Early Dutch radio astronomy after Second World War
Longitude determination, 1913
Caesium beam atomic clocks, 1984
18th Century astronomical clock
Tatel Telescope under construction, 1958
300-foot Green Bank radio telescope construction, 1961
Dark-field micrometer, 19th century
Armagh 10-inch refractor telescope, 1885
Hough's printing chronograph, 1870s
Jansky radio antenna replica
Lick Observatory telescope, 1887
Transit circle tracking device, 20th century
Kepler observatory K2 mission
Grote Reber's first radio telescope, 1930s
Transit circle, Edinburgh Observatory
Tatel radio telescope control room, 1960s
Spin-polarized electron gun, 1970s
Polishing radio telescope bearing
Collapsed 300-foot Green Bank radio telescope, 1988
Strasbourg astronomical clock, France
Lowell Observatory telescope
Mir Space Station
Western Electric 700 cavity magnetron
Observatory telescope
Chandra observatory in orbit
Chandra observatory onboard space shuttle
100-metre Green Bank Telescope
Green Bank Interferometer radio telescopes
Long Wavelength Array radio antennas
Sun and sunspots in 1910s, stereoscopic card
Kitt Peak Public Observatory
Kitt Peak National Observatory domes
Kitt Peak National Observatory dome
William Swann, US physicist
T80-South Telescope interior, Chile
McGraw-Hill Telescope interior, Arizona, USA
WIYN 3.5-metre Telescope, Arizona, USA
Hubble Space Telescope, artwork
Spacewalk
Computing for radio astronomy, 1960s
First NRAO radio telescopes, 1950s
140-foot Green Bank radio telescope construction, 1964
Superconducting amplifier
Sperry Gyro-Stabiliser
Draper's 28-inch telescope, 19th century
Cavity magnetron number 12
Northern Electric cavity magnetron
Eclipse camera, 1871
Telescope, artwork
Computing for radio astronomy, 1980s
Deep Space 1 ion engine
William Coblentz, US physicist
Radio telescope, Parkes observatory
VISTA telescope, Paranal Observatory, Chile
Explorer II high-altitude balloon
Tesla Company memorandum, 1920s
Scanning tunnelling microscope, 1980s
Spin analyzer, 1980s
Tesla's Wardenclyffe Tower laboratory, 1900s
Very Large Telescope, Paranal Observatory, Chile
Armillary sundial
Arecibo Observatory, satellite image
Bidston Hill Observatory and Lighthouse
Doppler spectroscopy, 1974
Very Large Array antenna
Herschel Space Observatory construction
Planck space observatory preparations
Planck space observatory tests
MIR space station in orbit
Effelsberg radio telescope control centre, Germany
Measurement Probe
3D measurement machine probe
3D measurement machine
Cosmic Origins Spectrograph
Pleiades open star cluster, 1888
Cecilia Payne-Gaposchkin, British-US astronomer
Herschel space telescope construction
WISE space telescope
Philae lander
European Extremely Large Telescope
Milky Way over Cumeada Observatory, Portugal
C H Johnson, US physicist
Telescope at an observatory with the Milky Way
Comet Hale-Bopp
Joseph Pawsey, Australian radio astronomer
Mona Hagyard with Solar Vector Magnetograph, 1990
Comet Arend-Roland, Belgian stamp commemoration
Uranus in 1910s, stereoscopic card
HARPS planet-finding instrument spectrum
Mount Wilson Observatory, USA
Borexino solar neutrinos experiment
Karl Jansky, US radio engineer
Proximity fuse
Prototype chaff cutter
Identification unit contactor
Rebecca interrogator indicating unit
Hospital X-ray equipment, 1920s
Hydrogen maser
Jantar Mantar observatory
Argentine National Observatory
Transmission electron microscopy, 1950s
Transmission electron microscopy, 1960s
Paranal Observatory under star trails
Drum chronograph, Sydney Observatory
Chien-Shiung Wu, Chinese-US physicist
Very Large Array, USA
Bracewell Sundial at Very Large Array, USA
1874 Transit of Venus observers
Hall's discovery of the moons of Mars, 1877
SOFIA airborne observatory model
Large Binocular Telescope, USA
Swedish-ESO Submillimetre Telescope, Chile
Volume phase holographic grating
Hydra telescopic spectrograph device focal plane
Green Bank Telescope, USA
Very Large Array antennas, USA
Very Large Array antenna, USA
Lee De Forest, US inventor
Grand Orrery by John Rowley
SOFIA airborne observatory in flight
LIGO gravitational wave detector
LIGO gravitational wave detector optics
GREAT sensor on SOFIA telescope, 2011
Effelsberg radio telescope, Germany
Partial solar eclipse, October 1996
Pillars of Creation in Eagle Nebula, 1995 HST image
Part of the Hubble Deep Field, 1995
Earth's geocorona from the Moon during Apollo 16, 1972
Saturn in 1911, stereoscopic card
ALMA radio antenna front end
Hipparcos satellite
Giant solar prominence, UV image
The Sun, composite UV image
Cerro Armazones observatory, Chile
La Silla Observatory, Chile
Construction of the Multiple Mirror Telescope Observatory
Cerro Tololo Inter-American Observatory, Chile
Calibrating a 3D measurement machine
First atomic force microscope, 1986
Westinghouse three-phase alternator
Tesla oscillator
ALMA radio astronomy telescopes
Allen Telescope Array at night
Westerbork Synthesis Radio Telescope
Very Large Array radio antenna
LUNA particle detector, LNGS laboratory
Sunset over Paranal observatory, Chile