Table of Contents
What is the main idea of from when stars explode?
During their lives, massive stars cause helium nuclei to join together to make oxygen. Then, when the stars explode, they cast this oxygen into space. And the explosions themselves make iron. In fact, scientists think supernova explosions made most of the iron in the universe.
What is a supernova Commonlit answers?
A supernova is the explosion of a star. It is the largest explosion that takes place in space.
How Pluto stopped being a planet central idea?
What is the main idea of the article “How Pluto Stopped Being a Planet”? A group of astronomers decided that Pluto is a dwarf planet. Pluto is large enough to be a moon but too small be a planet. Some astronomers still believe Pluto should be called a planet.
What is the relationship between supernovae and life on Earth?
Supernovae, the explosions of stars, have been the main focus. A really nearby event — 30 light-years away or closer — would induce a mass extinction from radiation destroying the ozone layer, allowing lots of ultraviolet radiation through to damage life on the surface.
Why can’t the sun explode?
The gravitational pull of the mass of the sun is kept in check by the fusion that this pull provides. Thus the Sun is at exactly the equilibrium of these two forces. In other words, the Sun doesn’t explode because its forces are balanced.
What is the central idea of supernova?
The brilliant point of light is the explosion of a star that has reached the end of its life, otherwise known as a supernova. Supernovae can briefly outshine entire galaxies and radiate more energy than our sun will in its entire lifetime. They’re also the primary source of heavy elements in the universe.
What is a super nova quizlet?
Supernova. A star that suddenly increases greatly in brightness because of a catastrophic explosion that ejects most of its mass. Black Hole.
How do you find the main idea of a story?
Finding the main idea
- at the beginning of paragraphs. The first sentence often explains the subject being discussed in the passage.
- in the concluding sentences of a paragraph. The main idea can be expressed as a summation of the information in the paragraph as well as a link to the information in the next paragraph.
Does Pluto orbit the sun?
248 years
Pluto/Orbital period
What happens when the sun goes supernova?
X-rays and more energetic gamma-rays from the supernova could destroy the ozone layer that protects us from solar ultraviolet rays. It also could ionize nitrogen and oxygen in the atmosphere, leading to the formation of large amounts of smog-like nitrous oxide in the atmosphere.
What will happen when the sun dies?
After the Sun exhausts the hydrogen in its core, it will balloon into a red giant, consuming Venus and Mercury. Earth will become a scorched, lifeless rock — stripped of its atmosphere, its oceans boiled off. While the Sun won’t become a red giant for another 5 billion years, a lot can happen in that time.