In 2021, several asteroids made close approaches to Earth. While there were many such events, here are some of the notable ones: 1. **2021 EA** - An asteroid estimated to be around 20 meters in diameter passed within 0.0021 AU (about 800 km) of Earth on January 6, 2021. 2. **2021 CF1** - This asteroid was about 20 meters wide and came within 0.

The "List of named minor planets: K" refers to a catalog of minor planets (also known as asteroids) that have been given specific names starting with the letter "K." These minor planets are celestial bodies that orbit the Sun and are not classified as planets or comets.

The list of named minor planets (also known as asteroids) beginning with the letter "S" includes numerous objects that have been officially named by the International Astronomical Union (IAU). This includes asteroids ranging from well-known ones, like 1 Ceres, to many others that might be less recognized.

Isonoe is one of the moons of Jupiter. It is classified as a non-regular or irregular moon, meaning that it has an eccentric and inclined orbit compared to the planet's equatorial plane. Isonoe was discovered in 2000 and is part of a group of moons known as the Himalia group, named after the largest moon in that cluster, Himalia. Isonoe has a diameter of about 2 kilometers (1.

The list of minor planets between 10,001 and 11,000 includes various asteroids that have been assigned numbers by the Minor Planet Center (MPC). Each minor planet is typically named after a person, place, or concept. The names often honor individuals or reflect historical or cultural significance.

Tin pest, also known as "tin disease" or "tin decay," is a phenomenon that affects tin, particularly at low temperatures (below approximately 13.2 °C or 55.8 °F). It involves the transformation of beta-tin (the stable form of tin at higher temperatures) into alpha-tin, which is a powdery, non-metallic form of tin that can lead to the deterioration of tin objects.

The list of minor planets numbered from 111001 to 112000 includes a variety of celestial objects discovered and cataloged by astronomers. Each minor planet is assigned a unique number by the International Astronomical Union (IAU) once it has been observed and confirmed. This list can include asteroids from the main asteroid belt, near-Earth objects, and other small bodies in our solar system.

Euporie is one of the moons of Jupiter. It is classified as a member of the Himalia group, a cluster of irregular moons that share similar orbits and characteristics. Euporie was discovered in 2003 and is notable for its relatively small size, with a diameter of about 2 kilometers (approximately 1.2 miles).

The "List of minor planets: 121001–122000" refers to a set of minor planets (also known as asteroids) that have been identified and numbered by the Minor Planet Center (MPC). Each minor planet is given a unique number and often a name, and these numbers are assigned in the order of discovery. This specific range includes minor planets numbered from 121001 to 122000.

Europa is one of Jupiter's largest moons and is the sixth-largest moon in the solar system. It was discovered in 1610 by the Italian astronomer Galileo Galilei and is one of the four largest moons of Jupiter, known as the Galilean moons, which also include Io, Ganymede, and Callisto. Europa is especially notable for several reasons: 1. **Icy Surface**: Europa has a smooth, icy surface that is believed to be mainly composed of water ice.

Himalia is one of the moons of Jupiter and is notable for being the largest of Jupiter's irregular satellites. It was discovered in 1904 by the astronomer Charles Dillon Perrine. Himalia has a diameter of about 170 kilometers (approximately 106 miles) and orbits Jupiter at a distance of about 11 million kilometers (around 6.8 million miles).

Io is one of the four largest moons of Jupiter, known as the Galilean moons, which were discovered by Galileo Galilei in 1610. It is the most volcanically active body in the solar system, with hundreds of active volcanoes and extensive lava flow fields. This intense geological activity is primarily due to tidal heating, caused by the gravitational interactions with Jupiter and the other Galilean moons—Europa, Ganymede, and Callisto—which create significant internal friction and heat within Io.

The list of minor planets numbered 173001 to 174000 includes a range of small celestial bodies (asteroids) in our solar system that have been assigned a number by the Minor Planet Center, part of the International Astronomical Union. Each one of these minor planets has been tracked and cataloged based on their orbits, sizes, compositions, and other characteristics.

The list of minor planets numbered from 183001 to 184000 contains a variety of asteroids that have been discovered and assigned a unique number by the Minor Planet Center (MPC). Each minor planet typically has its own designated name and sometimes additional designations like provisional designations based on their discovery circumstances.

The list of minor planets from 187001 to 188000 includes a range of asteroids that are cataloged in the minor planet database maintained by astronomical organizations such as the International Astronomical Union (IAU). Each minor planet is assigned a unique number upon its discovery, and many of them also have names based on various themes like mythology, names of scientists, or other cultural references.

Jupiter LXVI, also known as "Thyone," is one of the many moons of Jupiter. It was discovered in 2003 and is part of the group of moons that are thought to have originated as captured objects from the Kuiper Belt or other regions of space rather than having formed in place around Jupiter. Thyone is one of the outer irregular moons of Jupiter, characterized by its distant and eccentric orbit.

The list of minor planets numbered 311001 to 312000 includes various small celestial bodies that are part of our solar system, specifically those that orbit the Sun. Each minor planet is designated with a unique number, reflecting its discovery order.

The list of minor planets from 334001 to 335000 consists of various celestial objects that have been identified and cataloged as minor planets by astronomers. These minor planets can include asteroids and other small solar system bodies that orbit the Sun. Each minor planet is assigned a unique number upon discovery and may also have a name associated with it, often derived from mythology, history, or notable figures.

Orthosie is one of the moons of Jupiter. It is a member of the Himalia group, which is a group of irregularly shaped moons that orbit Jupiter at relatively large distances. Orthosie was discovered in 2001 and is relatively small, with a diameter of about 20 kilometers (12 miles). The moon is notable for its irregular shape and its orbit, which is characteristic of many of the outer moons of Jupiter.

The list of minor planets from 345001 to 346000 includes various celestial bodies that are part of the asteroid belt or other regions of our solar system. These minor planets are usually designated with a number and a name if they have been given one. Minor planets can include asteroids, trans-Neptunian objects, and other small celestial bodies.