Comets
Comets are visible from Earth on rare occasions
These are a type of asteroid but unlike asteroids
they are far away in outer space beyond the
planets. They have a long shining tail which is
formed by clumps of ice, gas and dust. Halley's
Comet is one such comet which was seen in 1986
and which will be visible after 76 years. In India,
it is also known as Pucchal Tara (or a star with a
tail). It would be visible again in 2062. There are
other comets also and may be visible at different
times.
Answers
Answer:
A comet is an icy, small Solar System body that, when passing close to the Sun, warms and begins to release gases, a process called outgassing. This produces a visible atmosphere or coma, and sometimes also a tail. These phenomena are due to the effects of solar radiation and the solar wind acting upon the nucleus of the comet. Comet nuclei range from a few hundred meters to tens of kilometers across and are composed of loose collections of ice, dust, and small rocky particles. The coma may be up to 15 times Earth's diameter, while the tail may stretch beyond one astronomical unit. If sufficiently bright, a comet may be seen from Earth without the aid of a telescope and may subtend an arc of 30° (60 Moons) across the sky. Comets have been observed and recorded since ancient times by many cultures.
Explanation:
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