Astronomy: The general field of natural sciences that deals with celestial objects, including Solar System, Galactic and Extragalactic objects. The majority of students enrolled in the field work in this general area. The scientific field that deals with the study of outer space is called astronomy. The name comes from the Greek words astron, meaning “star”, and.
Space is covered in several articles. For a philosophical consideration of the subject, see metaphysics. For a discussion of the relativity of space and time, see Relativity. For a description of space as the region of the universe beyond Earth and its atmosphere, see Cosmos.
For scientific research coverage in this region, see Space Exploration. We measure long distances in space in light-years and represent the distance it takes for light to travel in a year (approximately 5.8 trillion miles (9.3 trillion kilometers)). The problem space includes the current number, any previous work, and everything related to the problem. Elizabeth first became interested in space after watching the movie Apollo 13 in 1996, and she still wants to be an astronaut one day.
There is also the expression cyberspace to refer to digital communications, although it has gone out of style in recent years. Most early astronomy consisted of mapping the positions of the stars and planets, a science that is now known as astrometry. When the first neutral atoms formed from a sea of primitive ions, space became transparent to radiation, releasing energy that is now considered microwave background radiation. In fact, the empty environment in space and on the Moon is one of the reasons why the Apollo program's lunar lander was designed to look almost spider-like, as described by the Apollo 9 crew.
Ironically, even though space itself is cold, due to the lack of particles with which to interact, it is difficult to remove waste heat from spacecraft, requiring specialized infrared radiators. One example is gravitational waves or ripples in space-time that come from interactions between black holes. This means that when humans send a probe to a distant planet or asteroid, the ship will not suffer drag in the same way that an airplane does when it navigates through space. In mathematics, space is defined as a three-dimensional continuum without limits where objects can have relative positions, directions and sizes.
In addition to the debris fragments that dot the emptiest regions of space, research has shown that these areas also harbor different forms of radiation. In some cases, the three dimensions of space combine with the dimension of time, creating what is known as space-time. The answers to these questions may require the construction of new terrestrial and space instruments and, possibly, new advances in theoretical and experimental physics. Space is a term that can refer to various phenomena in science, mathematics and computer science and generally encompasses the concept of area or region.
The study of chemicals found in space, including their formation, interaction, and destruction, is called astrochemistry.
