23 relations: Apparent magnitude, Circumstellar habitable zone, Constellation, Earth, Exoplanet, Extrasolar Planets Encyclopaedia, Gas giant, Geoffrey Marcy, Goldilocks and the Three Bears, Hipparcos, Light-year, Luminosity, Orbit, R. Paul Butler, Scientific American, Surface gravity, Tau Boötis b, Upsilon Andromedae b, Virgo (constellation), 47 Ursae Majoris b, 51 Pegasi b, 55 Cancri b, 70 Virginis.
The apparent magnitude of a celestial object is a number that is a measure of its brightness as seen by an observer on Earth.
Christmas is an annual festival commemorating the birth of Jesus Christ,Martindale, Cyril Charles.
The Christmas season, also called the festive season, or the holiday season (mainly in the U.S. and Canada; often simply called the holidays),, is an annually recurring period recognized in many Western and Western-influenced countries that is generally considered to run from late November to early January.
Christmas Eve is the evening or entire day before Christmas Day, the festival commemorating the birth of Jesus.
Christmas traditions vary from country to country.
In astronomy and astrobiology, the circumstellar habitable zone (CHZ), or simply the habitable zone, is the range of orbits around a star within which a planetary surface can support liquid water given sufficient atmospheric pressure.
A constellation is a group of stars that are considered to form imaginary outlines or meaningful patterns on the celestial sphere, typically representing animals, mythological people or gods, mythological creatures, or manufactured devices.
Earth is the third planet from the Sun and the only astronomical object known to harbor life.
An exoplanet or extrasolar planet is a planet outside our solar system.
The Extrasolar Planets Encyclopaedia is an astronomy website, founded in Paris, France at the Meudon Observatory by Jean Schneider in February 1995, which maintains a database of all the currently known and candidate extrasolar planets, with individual pages for each planet and a full list interactive catalog spreadsheet.
A gas giant is a giant planet composed mainly of hydrogen and helium.
Geoffrey William Marcy (born September 29, 1954) is an American astronomer.
"Goldilocks and the Three Bears" (originally titled "The Story of the Three Bears") is a 19th-century fairy tale of which three versions exist.
Hipparcos was a scientific satellite of the European Space Agency (ESA), launched in 1989 and operated until 1993.
The light-year is a unit of length used to express astronomical distances and measures about 9.5 trillion kilometres or 5.9 trillion miles.
In astronomy, luminosity is the total amount of energy emitted per unit of time by a star, galaxy, or other astronomical object.
New Year is the time or day at which a new calendar year begins and the calendar's year count increments by one.
New Year's Day, also called simply New Year's or New Year, is observed on January 1, the first day of the year on the modern Gregorian calendar as well as the Julian calendar.
In the Gregorian calendar, New Year's Eve (also known as Old Year's Day or Saint Sylvester's Day in many countries), the last day of the year, is on 31 December which is the seventh day of Christmastide.
In physics, an orbit is the gravitationally curved trajectory of an object, such as the trajectory of a planet around a star or a natural satellite around a planet.
Scientific American (informally abbreviated SciAm) is an American popular science magazine.
The surface gravity, g, of an astronomical or other object is the gravitational acceleration experienced at its surface.
Upsilon Andromedae b (υ Andromedae b, abbreviated Upsilon And b, υ And b), also named Saffar, is an extrasolar planet approximately 44 light-years away from the Sun in the constellation of Andromeda.
Virgo is one of the constellations of the zodiac.
2018 has been designated as the third International Year of the Reef by the International Coral Reef Initiative.
2019 (MMXIX) will be a common year starting on Tuesday of the Gregorian calendar, the 2019th year of the Common Era (CE) and Anno Domini (AD) designations, the 19th year of the 3rd millennium, the 19th year of the 21st century, and the 10th and last year of the 2010s decade.
47 Ursae Majoris b (abbreviated 47 UMa b), also named Taphao Thong (ตะเภาทอง), is an extrasolar planet approximately 46 light-years from Earth in the constellation of Ursa Major.
51 Pegasi b (abbreviated 51 Peg b), unofficially dubbed Bellerophon, later named Dimidium, is an extrasolar planet approximately 50 light-years away in the constellation of Pegasus.
55 Cancri b (abbreviated 55 Cnc b), occasionally designated 55 Cancri Ab (to distinguish it from the star 55 Cancri B), also named Galileo, is an exoplanet orbiting the Sun-like star 55 Cancri A every 14.65 days.
70 Virginis (abbreviated 70 Vir) is the Flamsteed designation of a yellow dwarf star approximately 59 light-years away in the constellation Virgo.