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The multiverse is the hypothetical set of all universes. [1][a] Together, these universes are presumed to comprise everything that exists: the entirety of space, time, matter, energy, information, and the physical laws and constants that describe them. The different universes within the multiverse are called "parallel universes", "flat ...
Space probes operational as of November 2023. This is a list of active space probes which have escaped Earth orbit. It includes lunar space probes, but does not include space probes orbiting at the Sun–Earth Lagrangian points (for these, see List of objects at Lagrangian points). A craft is deemed "active" if it is still able to transmit ...
The observable universe contains as many as an estimated 2 trillion galaxies [101] [102] [103] and, overall, as many as an estimated 10 24 stars [104] [105] – more stars (and earth-like planets) than all the grains of beach sand on planet Earth; [106] [107] [108] but less than the total number of atoms estimated in the universe as 10 82; [109 ...
Planetary habitability in the Solar System is the study that searches the possible existence of past or present extraterrestrial life in those celestial bodies. As exoplanets are too far away and can only be studied by indirect means, the celestial bodies in the Solar System allow for a much more detailed study: direct telescope observation, space probes, rovers and even human spaceflight.
This is a list of all rovers on extraterrestrial bodies in the Solar System. Since 1970, there have been seven lunar rovers, seven Mars rovers, and three asteroid rovers that have successfully landed and explored these extraterrestrial surfaces. In addition, a small helicopter on Mars, Ingenuity, operated from 2021 to 2024.
Red dwarf systems. K-type main-sequence star systems. Yellow dwarf systems. F-type main-sequence star systems. v. t. e. The following list includes some of the potentially habitable exoplanets discovered so far. It is mostly based on estimates of habitability by the Habitable Worlds Catalog (HWC), and data from the NASA Exoplanet Archive.
Christus statue of Jesus depicted among artwork representing the planets and stars of the cosmos, which Mormons believe Jesus created under the direction of God the Father. Mormon cosmology is the description of the history, evolution, and destiny of the physical and metaphysical universe according to Mormonism, which includes the doctrines ...
In physical cosmology, the age of the universe is the time elapsed since the Big Bang.Astronomers have derived two different measurements of the age of the universe: [1] a measurement based on direct observations of an early state of the universe, which indicate an age of 13.787 ± 0.020 billion years as interpreted with the Lambda-CDM concordance model as of 2021; [2] and a measurement based ...