The Hubble Space telescope officially launched in 1990 and belongs jointly to NASA and also the ESA or European Space Agency. Orbiting the earth it was responsible for those splendid nebula pictures that we now so adore as screensavers on our phones and computer screens. Hubble continues to be the most famous of all telescopes the world over.
Over 20 years old, the Hubble operates using old-school technology and runs off an Intel 486 processor! Yes, you read right and just imagine what it could do if it ran off Pentium quad core i7 processors? This telescope has managed to survive this long thanks to countless missions into space where spares have been retrofitted onto its body and circuits repaired. It is a testament to modern engineering!