Space

Space the mysterious zone name: anupreet kaur Roll number: o3 Class: vii

universe The universe is gigantic. It contains Earth, the planets, the stars, and everything else in outer space. The universe is so big that a spaceship could travel for billions of years without reaching the end of it. It might even go on forever!

galaxy Galaxy, a massive ensemble of hundreds of millions of stars, all gravitationally interacting, and orbiting about a common center. Astronomers estimate that there are about 125 billion galaxies in the universe. All the stars visible to the unaided eye from Earth belong to Earth’s galaxy, the Milky Way. The Sun, with its associated planets, is just one star in this galaxy. Besides stars and planets, galaxies contain clusters of stars; atomic hydrogen gas; molecular hydrogen; complex molecules composed of hydrogen, nitrogen, carbon, and silicon, among others; and cosmic rays.

Milky way ,[object Object],[object Object]

WHAT ARE PLANETS? ,[object Object],[object Object]

stars ,[object Object],[object Object]

The Sun ,[object Object],[object Object],.

[object Object],Mercury Mercury orbits closer to the Sun than any other planet, making it dry, hot, and virtually airless. Although the planet’s cratered surface resembles that of the Moon, it is believed that the interior is actually similar to Earth’s, consisting primarily of iron and other heavy elements. This composite photograph was taken in 1974 by Mariner 10, the first probe to study Mercury in detail.

Asteroid belt ,[object Object]

SATURN Saturn, distinguished by its rings, is the second largest planet in the solar system. This processed Hubble Space Telescope image shows the planet’s cloud bands, storms, and rings as they would appear to the human eye.

Neptune This image of Neptune, taken by the Voyager 2 spacecraft, shows the planet’s most prominent features. The large, dark oval surrounded by white clouds near the planet’s equator is the Great Dark Spot, a storm similar to Jupiter’s Great Red Spot. The smaller dark oval with a bright core below and to the right of the Great Dark Spot is another storm known as Dark Spot 2.

constellation People have grouped stars into imagined patterns, called constellations, since ancient times. Ancient people created these patterns to remember important people and events. Click on the arrows to learn more about some of the constellations that appear in the skies of the Northern Hemisphere. Following are the name of the constellations ,which people have grouped since ancient times:-

[object Object],[object Object]

[object Object],2. Ursa Major-

[object Object],Pegasus (astronomy), northern constellation, situated southeast of Andromeda. The three brightest stars of Pegasus, α Pegasi, or Markab, β Pegasi, or Scheat, and g Pegasi, or Algenib, form a square with α Andromedae, called the square of Pegasus. The constellation, which is named for the winged horse of Greek mythology, is usually seen upside down in the sky, with only the head, neck, and front half of the animal represented by the stars.

[object Object],Orion, named for a famous hunter in Greek mythology, is the brightest constellation in the winter sky. It includes eight bright stars in the shape of an hourglass. According to legend, three stars in a row form the belt of Orion.

[object Object],Cygnus (Latin, “swan”), prominent northern constellation that lies mostly within the Milky Way. Cygnus is seen best during early September, when it reaches its highest point in the evening sky. It contains the bright first magnitude star Deneb and a group of six stars that form a Latin cross known as the Northern Cross. Cygnus contains many interesting objects including 61 Cygni, the first star (other than the sun) to have its distance from earth calculated. Cygnus also contains one of the most powerful radio sources in the sky, Cygnus A and a strong X-ray source, Cyg X-1, thought to be a black hole.

I HOPE YOU ENJOYED MY PRESENTATION ABOUT SPACE . THANK YOU. CREATED BY- ANUPREET KAUR OF CLASS VII

Space

Space

Recommandé

Contenu connexe

Tendances

Tendances(20)

Similaire à Space

Similaire à Space(20)

Dernier

Dernier(16)

Space

Notes de l'éditeur