Our Universe & Solar System consists of many star, the Sun, and its orbiting planets (including Earth), along with numerous moons, asteroids, comet material, rocks, and dust. Our Sun is just one star among the hundreds of billions of stars in our Milky Way Galaxy.
the study of the universe is known as Cosmology.
A galaxy is a vast system of billions of stars, dust and light gases bound by their own gravity.
There are 100 billion galaxies in the universe and each galaxy has, on average, 100 billion stars.
Our galaxy is Milky Way Galaxy (or the Akash Ganga) formed after the big bang.
Andromeda is the nearest galaxy to the Milky Way.
Big Bang was an explosion of concentrated matter in the universe that occurred 15 billion years ago, leading to the formation of galaxies of stars and heavenly bodies.
It is believed that universe should be filled with radiation called the “Cosmic Microwave Background”.
NASA has launched two mission to study this radiation, i.e the Cosmic Background Explorer (COBE) and the Wilkinson Microwave Anisotropy Probe (WMAP).
Stars are heavenly bodies made up of hot burning and shine by emitting their own light.
Stars having the mass greater than three times that of the sun, have very high gravitational power, so that even light can not escape from its gravity and hence called black hole.
Comets made up of frozen gases. They move around the Sun in elongated elliptical orbit with the tail always pointing away from the sun.
आज इस आर्टिकल में हम आपको बताएँगे की अपने डॉक्यूमेंट किससे Attest करवाए - List…
निर्देश : (प्र. 1-3) नीचे दिए गये प्रश्नों में, दो कथन S1 व S2 तथा…
1. रतनपुर के कलचुरिशासक पृथ्वी देव प्रथम के सम्बन्ध में निम्नलिखित में से कौन सा…
आज इस आर्टिकल में हम आपको Haryana Group D Important Question Hindi के बारे में…
अगर आपका selection HSSC group D में हुआ है और आपको कौन सा पद और…
आज इस आर्टिकल में हम आपको HSSC Group D Syllabus & Exam Pattern - Haryana…