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Hubble Space Telescope [41] 2 July 1990: First time a spacecraft coming from deep space uses the Earth for a gravity-assist manoeuvre. ESA Giotto [42] 21 October 1991: First asteroid flyby (951 Gaspra closest approach 1,600 km). USA (NASA) Galileo: 1992 First confirmed observation of an exoplanet. Canada Poland: Aleksander Wolszczan & Dale ...
The timeline of discovery of Solar System planets and their natural satellites charts the progress of the discovery of new bodies over history. Each object is listed in chronological order of its discovery (multiple dates occur when the moments of imaging, observation, and publication differ), identified through its various designations (including temporary and permanent schemes), and the ...
List of space telescopes; New Frontiers program; Out of the Cradle – 1984 book about scientific speculation on future missions. Space Race; Timeline of artificial satellites and space probes; Timeline of discovery of Solar System planets and their moons; Timeline of first orbital launches by country; Timeline of space exploration
28 BCE – Chinese history book Book of Han makes earliest known dated record of sunspot. [ 34 ] c. 150 CE – Claudius Ptolemy completes his work Almagest , that codifies the astronomical knowledge of his time and cements the geocentric model in the West, and it remained the most authoritative text on astronomy for more than 1,500 years.
1924: Edwin Hubble: the discovery that the Milky Way is just one of many galaxies; 1925: Erwin Schrödinger: Schrödinger equation (Quantum mechanics) 1925: Cecilia Payne-Gaposchkin: Discovery of the composition of the Sun and that hydrogen is the most abundant element in the Universe; 1927: Werner Heisenberg: Uncertainty principle (Quantum ...
The month of February brought some unbelievably exciting discoveries in the study of space, and with it even more out of this world images. Most notably, scientists detected a "chirp" from ...
Such discoveries are often a multi-step, multi-person process. Multiple discovery sometimes occurs when multiple research groups discover the same phenomenon at about the same time, and scientific priority is often disputed. The listings below include some of the most significant people and ideas by date of publication or experiment.
On August 20 the Voyager 2 space probe launched by NASA to study the Jovian system, Saturnian system, Uranian system, Neptunian system, the Kuiper belt, the heliosphere and the interstellar space. On September 5 The Voyager 1 space probe launched by NASA to study the Jovian system, Saturnian system and the interstellar medium.