Planets similar to or like Moon
Astronomical body that orbits the Earth as its only permanent natural satellite. Wikipedia
Third-largest natural satellite of Saturn, eleventh-largest in the Solar System, and the largest body in the Solar System known not to be in hydrostatic equilibrium. Discoveries by the Cassini mission in 2007 revealed several unusual features, such as a massive equatorial ridge running three-quarters of the way around the moon. Wikipedia
Shape of the directly sunlit portion of the Earth as viewed from the Moon . From the Moon, the Earth phases gradually and cyclically change over the period of a synodic month (about 29.53 days), as the orbital positions of the Moon around the Earth and of the Earth around the Sun shift. Wikipedia
Tiny near-Earth asteroid and fast rotator with a diameter of approximately 2–3 meters that ordinarily orbits the Sun but makes close approaches to the Earth–Moon system around every twenty years, when it can temporarily enter Earth orbit through temporary satellite capture . In Earth orbit from September 2006 to June 2007. Wikipedia
Sub-kilometer near-Earth asteroid and the first Earth trojan discovered to date; it precedes Earth in its orbit around the Sun. Trojan objects are most easily conceived as orbiting at a Lagrangian point, a dynamically stable location (where the combined gravitational force acts through the Sun's and Earth's barycenter) 60 degrees ahead of or behind a massive orbiting body, in a type of 1:1 orbital resonance. Wikipedia
Possible dwarf planet located beyond Neptune's orbit. Discovered in 2004 by a team headed by Mike Brown of Caltech at the Palomar Observatory in the United States and independently in 2005, by a team headed by José Luis Ortiz Moreno at the Sierra Nevada Observatory in Spain, though the latter claim has been contested. Wikipedia
Unconfirmed (and frequently disputed) exoplanet claimed to orbit within the Gliese 581 system, twenty light-years from Earth. Discovered by the Lick–Carnegie Exoplanet Survey, and is the sixth planet orbiting the star; however, its existence could not be confirmed by the European Southern Observatory / High Accuracy Radial Velocity Planet Searcher (HARPS) survey team, and its existence remains controversial. Wikipedia
- Edgar Allan Poe wrote several stories considered to be science fiction, including "The Unparalleled Adventure of One Hans Pfaall" (1835) which featured a trip to the Moon.
- By maintaining a constant angular relationship to a bright celestial light, such as the Moon, they can fly in a straight line.
- The university claims the only alumni association with a chapter on the moon, established in 1971 when the crew of Apollo 15 placed a charter plaque for a new U-M Alumni Association on the lunar surface.
- During the Cold War, the United States and the Soviet Union competed in the Space Race, culminating with the 1969 Apollo 11 mission, the spaceflight that first landed humans on the Moon.
- By precisely measuring the drop in brightness of a star as it is occulted by the Moon (or the rise in brightness when it reappears), the star's angular diameter can be computed.
- Isaac Asimov and Carl Sagan considered Somnium the first science-fiction story; it depicts a journey to the Moon and how the Earth's motion is seen from there.
- Its purpose is to gather data on the moon's origin and evolution.
- During partial eclipses most sunlight is blocked by the Moon passing in front of the Sun, but the uncovered parts of the photosphere have the same surface brightness as during a normal day.
- The Space Launch System is intended to launch the Orion Multi-Purpose Crew Vehicle and other elements towards the Moon, near-Earth asteroids, and one day Mars.
- There are dark basaltic plains on the Moon, similar to lunar maria but smaller, that are called lacus (singular lacus, Latin for "lake") because they were thought by early astronomers to be lakes of water.
- He smuggled a golf club and two golf balls on board Apollo 14 with the intent to golf on the Moon.
- He reasoned that it was not the chariot of Helios, but instead a giant flaming ball of metal even larger than the land of the Peloponnesus and that the Moon reflected the light of the Sun.
- Radar relies on its own transmissions rather than light from the Sun or the Moon, or from electromagnetic waves emitted by the objects themselves, such as infrared wavelengths (heat).
- Earth's gravity interacts with other objects in space, especially the Sun and the Moon, which is Earth's only natural satellite.
- The Earth's Moon has no large volcanoes and no current volcanic activity, although recent evidence suggests it may still possess a partially molten core.
- Scientists hypothesize that some of the first water brought to Earth was delivered by asteroid impacts after the collision that produced the Moon.
- Beside paintings, the most valuable are Moon rocks donated by Apollo 11 crew Neil Armstrong, Buzz Aldrin and Michael Collins while visiting Belgrade in 1969 and from mission Apollo 17 donated by Richard Nixon in 1971.
- Research in 2008 has presented evidence regarding a theory proposed in 1980 postulating that, four billion years ago, the northern hemisphere of Mars was struck by an object one-tenth to two-thirds the size of Earth's Moon.
- From the surface of Mars, the motions of Phobos and Deimos appear different from that of the Moon.
- Such cultural influences can be found in language, lunar calendar systems, art, and mythology.
- The other terrestrial planets (Mercury, Venus, and Mars) as well as the Moon are believed to have a metallic core consisting mostly of iron.
- Mars is a terrestrial planet with a thin atmosphere, having surface features reminiscent both of the impact craters of the Moon and the valleys, deserts, and polar ice caps of Earth.
- Twelve ancient constellations belong to the zodiac (straddling the ecliptic, which the Sun, Moon, and planets all traverse).
- 150–80 BC) was an early analog computer designed to calculate the location of the Sun, Moon, and planets for a given date.
- Many other Soviet and Russian space exploration records ensued, including the first spacewalk performed by Alexei Leonov, Luna 9 was the first spacecraft to land on the Moon, Zond 5 brought the first Earthlings (two tortoises and other life forms) to circumnavigate the Moon, Venera 7 was the first to land on another planet (Venus), Mars 3 then the first to land on Mars, the first space exploration rover Lunokhod 1, and the first space station Salyut 1 and Mir.
- What is the ratio in brightness between the Sun and the full Moon?
- The dark areas visible on Earth's moon, the lunar maria, are plains of flood basaltic lava flows.
- Planetary geologists have measured the relative quantities of oxygen isotopes in samples from the Earth, the Moon, Mars, and meteorites, but were long unable to obtain reference values for the isotope ratios in the Sun, believed to be the same as those of the primordial solar nebula.
- Roger Joseph Boscovich was a Ragusan physicist, astronomer, mathematician and polymath of paternal Serbian origin (although there are competing claims for Bošković's nationality) who produced a precursor of atomic theory and made many contributions to astronomy and also discovered the absence of atmosphere on the Moon.
- Richard of Wallingford (1292–1336) made major contributions to astronomy and horology, including the invention of the first astronomical clock, the Rectangulus which allowed for the measurement of angles between planets and other astronomical bodies, as well as an equatorium called the Albion which could be used for astronomical calculations such as lunar, solar and planetary longitudes and could predict eclipses.
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