"Exploring the Universe" Universe PPT download

Description

"Exploring the Universe" Universe PPT download

Part One: The Expanding Universe

The solar system is a celestial body system centered on the sun, the star, and composed of planets, satellites, dwarf planets, small celestial bodies (including asteroids, comets), etc.

Most of the stars we observe in the sky are stars that shine and heat like the sun, and some of them will form a celestial system similar to the solar system.

During stargazing, the shining band of Milky Way light we see in the sky is actually a star group composed of many stars, which is called the Milky Way.

The Milky Way is a huge group of stars composed of tens of millions of stars. In the Milky Way, most stars are concentrated in an oblate spheroid of space, which looks like a discus when viewed from the side. Our solar system is also in this discus, and the Milky Way that people see with the naked eye is part of this "discus".

In the Milky Way, the total number of stars is more than 100 billion. There are also various types of galactic nebulae, interstellar gas and dust.

Exploring the Universe PPT, Part 2: The Vibrant Universe

Many stars are born every moment in the universe, and many stars die at the same time.

Stars are constantly moving at high speed. Some stars themselves expand and contract rhythmically, and some stars continue to eject matter... Our universe is a dynamic universe.

Exploring the Universe PPT, Part Three: Human Exploration of the Universe

A long time ago, humans only relied on naked eyes to observe the sky, and only 6,000 to 7,000 stars could be seen.

The Dengfeng Observatory, the ruins of an ancient observatory in Gaocheng Town, Dengfeng County, Henan, is one of the oldest existing observatories in the world.

Ancient Chinese star map from the 10th century AD. It is one of the earliest surviving star maps in the world and is now in the British Museum.

In 1609, Italian astronomer Galileo built the first astronomical telescope, which enabled people to see farther into the sky and ushered in a new era of using telescopes to observe the universe.

For more than 300 years, various telescopes have been the most important tools for astronomical observation.

my country's lunar exploration plan code-named "Chang'e Project" has been implemented in 2004. China's lunar exploration plan is divided into three stages, which can be summarized by the three words "circling, landing and returning":

Orbiting: In 2007, a lunar satellite "Chang'e-1" was launched, which orbited the moon for one year and obtained some scientific data.

Fall: Launch a lunar probe to land on the moon before 2010.

Answer: Before 2020, the lunar landing robot will return to Earth after collecting some samples from the lunar surface.

For more than 100 years, countless scientists and engineering experts have worked hard to realize the great ideal of human beings traveling in space, and finally made a major breakthrough in manned space technology in the early 1960s. Over the next 38 years,

A total of 385 male and female astronauts have traveled in space. The longest time they lived and worked in space was 439 days.

Keywords: free download of Science PPT courseware for the second volume of sixth grade in the textbook edition, Exploring the Universe PPT download, Universe PPT download, .PPT format;

For more information about the "Exploring the Universe" PPT courseware, please click on the "Universe ppt Explore the Universe ppt" tab.

"Exploring the Universe" Universe PPT:

"Exploring the Universe" Universe PPT Part 1: Introduction to the new lesson. Recall, what kind of galaxy is the solar system? Is the solar system unique in the universe? The solar system is centered on the sun, the star, and consists of planets, satellites, dwarf planets, and small celestial bodies (including small...

File Info

Update Time: 2024-07-29

This template belongs to science courseware Science Edition for Sixth Grade Science Volume 2 industry PPT template

Preview