The phases of moon

Do we know?. why does the moon changes its shape?

The moon, which causes high and low tides on the Earth, is a sphere. It does not changes its shape; only our view of it changes. The reason is that unlike the stars, the moon does not produce light, but only reflects the light of the sun. Since the moon goes around the Earth once in a month, the orientation of the moon, the sun, and the Earth respective to one another changes. For this reason, the illuminated part of the moon cannot always be seen clearly from the Earth. Sometimes we see it full, sometimes half, and sometimes not at all. The side of the moon that faces us remains the same. We can see the craters and dark spots on the moon, which are known as 'mares'.

We always see the same side of the moon.

It happens because of the moon rotates once on its axis during the time it complete one revolution around the Earth -which is 27 days, 7 hours, and 43 minutes. The mutual attraction between the Earth and the moon has tuned these two movements in this way. In fact,we did not know for a long time how the moon looked 'from behind'. In 1959, a Russian probe sent pictures of the unseen side of the moon to the Earth. The Apollo spaceship landed on the visible side of the moon because a radio connection cloud not be established with the other side.

Comments

The difference between Asteroids, comets, and Meteors.

Asteroids👈 Asteroids are small heavenly bodies, which move around the sun like the planets. Thus, they are also called planetoids. Most of them go around the sun in the asteroid belt. The asteroid belt is the space between the orbits of Mars and Jupiter. In this area, billions of small rocky heavenly objects revolve around the sun, which are known as asteroids. The belt stretches only a few kilometres across. The asteroids originated probably at the same time as the planets. Possibly they are the remains of an 'unsuccessful attempt' to build a planet. Since they are very small, the asteroids can be thrown out of their orbit by a small collision. They can then fall on Mars or on the Earth. Comets👈 Comets, like Halley's comet, which has been sighted many times in the sky, are small heavenly bodies. They are characterized by a different orbit and a bright glowing tail. Halley's comet mostly shines brightly and can be seen with the naked eyes when it is very...

How are animals becoming extinct?

Since the animals have evolved species continue to become extinct. The most well-known example of extinct species is that of the dinosaurs. Often the species cannot adjust fast enough to the changing environmental conditions, or new species arise and displace the existing ones. Today, many species are becoming extinct because of the actions of humans. Elephants, big cats, and rhinos are hunted ruthlessly, forest areas are cleared, and the grey whales are endangered. These are only a few of the species mentioned in the ' Red List'. Do you know about 'Red List'? 'Red List' comes under organization IUCN (The International Union for Conservation of Nature). The list of endangered species is known as the Red List. It lists all those plant and animal species that are facing the threat of extinction worldwide. The list is revised every 2 years. For the year 2006, the list contained around 16,000 species of plants and animals; 530 species more than t...

How can we protect nature?

We to live close to nature; animals, plants, soil, and water are all important for our well-being. Despite this, we keep destroying the gifts of nature with pesticides, garbage, and even through tourism. We must seek ways to protect nature. For example, we should adopt use alternative eco-friendly forms of energy. Each one of us can contribute towards saving the environment by avoiding food grown with the help of pesticides and choosing a fuel-efficient means of transport. All countries must come together to save the climate of the world. The Kyoto Protocol is a major step in this direction. The Kyoto Protocol is an international agreement aimed at fighting global warming . The countries that have signed the protocol have committed themselves to reduce the emission of greenhouse gases step by step, and thus prevent air pollution and global warming. The name of the contract come from the Japanese city of Kyoto, where this agreement was signed in 199...

Knowledge Shop

Search This Blog