Fill in the blank with appropriate word to complete the sentence.
Stars are celestial bodies that are _______ and ________.
Stars are celestial bodies that are _______ and ________.
A star is an astronomical
object consisting of a luminous spheroid of plasma held
together by its own gravity.
The nearest star to Earth is
the Sun. Many other stars are visible to the naked eye from Earth
during the night, appearing as a multitude of fixed luminous points in the sky due to their immense distance from Earth.
Historically, the most prominent stars were grouped into constellations and asterisms,
the brightest of which gained proper names. Astronomers have assembled star
catalogues that identify the known stars and provide standardized stellar
designations.
However, most of the estimated 300 sextillions (3×1023)stars in
the observable universe is invisible to the naked eye from
Earth, including all-stars outside our galaxy, the Milky
Way.
Stars are celestial objects that can produce
their own light. They are extremely hot and extremely large in size. They are
mostly made up of hydrogen gas with a little helium in them. The sun is also a
star; the sun’s energy and light play one of the key roles in sustaining all
forms of life on earth.
Stars produce light by nuclear fusion reactions that
happen inside it. In this process hydrogen is converted into helium and energy
is produced as a byproduct. It is this energy that comes to us as light. The
sun is near to us appears large and very bright in the sky. However, all
other stars are extremely far away from us. So, they appear small and faint in
the sky. In fact, many of these celestial bodies are
hundreds of times bigger than our sun in size and much brighter but they don’t
appear so because they are so far away from the earth.
They are present in the sky even during the day. We do
not see them because the sun’s bright light hides them. There are billions of
them in the universe, more than all the grains of sand in the earth.
A star is an astronomical object consisting of a luminous spheroid of plasma held together by its own gravity.
The nearest star to Earth is the Sun. Many other stars are visible to the naked eye from Earth during the night, appearing as a multitude of fixed luminous points in the sky due to their immense distance from Earth.
Historically, the most prominent stars were grouped into constellations and asterisms, the brightest of which gained proper names. Astronomers have assembled star catalogues that identify the known stars and provide standardized stellar designations.
However, most of the estimated 300 sextillions (3×1023)stars in the observable universe is invisible to the naked eye from Earth, including all-stars outside our galaxy, the Milky Way.
Stars are celestial objects that can produce their own light. They are extremely hot and extremely large in size. They are mostly made up of hydrogen gas with a little helium in them. The sun is also a star; the sun’s energy and light play one of the key roles in sustaining all forms of life on earth.
Stars produce light by nuclear fusion reactions that happen inside it. In this process hydrogen is converted into helium and energy is produced as a byproduct. It is this energy that comes to us as light. The sun is near to us appears large and very bright in the sky. However, all other stars are extremely far away from us. So, they appear small and faint in the sky. In fact, many of these celestial bodies are hundreds of times bigger than our sun in size and much brighter but they don’t appear so because they are so far away from the earth.
They are present in the sky even during the day. We do not see them because the sun’s bright light hides them. There are billions of them in the universe, more than all the grains of sand in the earth.
