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NASA "meatball" insignia, primary logo 1959–1975, 1992–present. NASA "worm" logotype 1975–1992, re-instated as a secondary logo in 2020. The National Aeronautics and Space Administration (NASA) insignia has three main official designs, although the one with stylized red curved text (the "worm") was retired from official use from May 22 ...
Planet symbols. A planet symbol or planetary symbol is a graphical symbol used in astrology and astronomy to represent a classical planet (including the Sun and the Moon) or one of the modern planets. The symbols were also used in alchemy to represent the metals associated with the planets, and in calendars for their associated days.
The use of astronomical symbols for the Sun and Moon dates to antiquity. The forms of the symbols that appear in the original papyrus texts of Greek horoscopes are a circle with one ray () for the Sun and a crescent for the Moon. [3] The modern Sun symbol, a circle with a dot (☉), first appeared in Europe in the Renaissance.
Launch of Mariner 1 in 1962. The Mariner program was conducted by the American space agency NASA to explore other planets.Between 1962 and late 1973, NASA's Jet Propulsion Laboratory (JPL) designed and built 10 robotic interplanetary probes named Mariner to explore the inner Solar System – visiting the planets Venus, Mars and Mercury for the first time, and returning to Venus and Mars for ...
There are eight planets within the Solar System; planets outside of the solar system are also known as exoplanets. Artist's concept of the potentially habitable exoplanet Kepler-186f. As of 6 September 2024, there are 5,756 confirmed exoplanets in 4,297 planetary systems, with 963 systems having more than one planet. [1]
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 ...
Former planets of the Solar System Former planet Discovery Removal Current status Notes The Morning Star [NB 1]: Antiquity: Antiquity: Aspects of Venus "Phosphorus", the Morning Star of Greek antiquity (Eosphorus, the Dawn-Bringer; called "Lucifer" by the Romans), and "Hesperus", the Evening Star (called "Vesper" by the Romans), were later identified as a single planet, Venus (Aphrodite).
The Kepler space telescope is a defunct space telescope launched by NASA in 2009 [5] to discover Earth-sized planets orbiting other stars. [6][7] Named after astronomer Johannes Kepler, [8] the spacecraft was launched into an Earth-trailing heliocentric orbit. The principal investigator was William J. Borucki.