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Astronomical Discoveries by Decade

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2010s

First picture of a black hole taken by Event Horizon Telescope.

1950s

Launch of Sputnik 1, the first artificial satellite.

1940s

V-2 rockets take the first pictures of Earth from space.

2000s

Evidence for dark energy from Type Ia supernovae.

1960s

First humans land on the Moon.

1900s

Discovery of Pluto

1930s

Discovery of the first radio waves from space by Karl Jansky.

1980s

Discovery of the first known extrasolar planets.

1970s

Viking 1 lands on Mars.

1990s

Launch of the Hubble Space Telescope.

1910s

Einstein’s Theory of General Relativity is published.

1920s

Edwin Hubble's discovery that the universe is expanding.

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