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Aestivation (Latin: aestas (summer); also spelled estivation in American English) is a state of animal dormancy, similar to hibernation, although taking place in the summer rather than the winter. Aestivation is characterized by inactivity and a lowered metabolic rate, that is entered in response to high temperatures and arid conditions. [1]
Astronomical naming conventions. In ancient times, only the Sun and Moon, a few stars, and the most easily visible planets had names. Over the last few hundred years, the number of identified astronomical objects has risen from hundreds to over a billion, and more are discovered every year. Astronomers need to be able to assign systematic ...
Planetary nomenclature. Planetary nomenclature, like terrestrial nomenclature, is a system of uniquely identifying features on the surface of a planet or natural satellite so that the features can be easily located, described, and discussed. [1] Since the invention of the telescope, astronomers have given names to the surface features they have ...
Bats hibernating in a silver mine. Hibernation is a state of minimal activity and metabolic depression undergone by some animal species. Hibernation is a seasonal heterothermy characterized by low body-temperature, slow breathing and heart-rate, and low metabolic rate. It is most commonly used to pass through winter months – called overwintering.
Sedna (minor-planet designation: 90377 Sedna) is a dwarf planet in the outermost reaches of the Solar System, orbiting the Sun beyond the orbit of Neptune. Discovered in 2003, the planetoid's surface is one of the reddest known among Solar System bodies. Spectroscopy has revealed Sedna's surface to be mostly a mixture of the solid ices of water ...
e. A hibernaculum (plural form: hibernacula) (Latin, "tent for winter quarters") is a place in which an animal seeks refuge, such as a bear using a cave to overwinter. The word can be used to describe a variety of shelters used by many kinds of animals, including insects, toads, lizards, snakes, bats, rodents, and primates of various species.
94356 Naruto (Naruto Strait) 96254 Hoyo (Hōyo Strait) 100266 Sadamisaki (Sadamisaki Peninsula, Shikoku) 118230 Sado (Sado, Niigata) 136743 Echigo (Echigo Province, an old province, now Niigata Prefecture minus the island of Sado) 145062 Hashikami (Hashikami, Aomori) 181043 Anan (Anan, Tokushima) 220736 Niihama (Niihama, Ehime)
There are eight planets within the Solar System; planets outside of the solar system are also known as exoplanets. As of 19 September 2024, there are 5,759 confirmed exoplanets in 4,300 planetary systems, with 963 systems having more than one planet. [1] Most of these were discovered by the Kepler space telescope.