Table of Contents
The 7 Main Spectral Types of Stars: O (Blue) (10 Lacerta) B (Blue) (Rigel) A (Blue) (Sirius) F (Blue/White) (Procyon) G (White/Yellow) (Sun) K (Orange/Red) (Arcturus) M (Red) (Betelgeuse).
What are the 7 main types of stars?
There are seven main types of stars. In order of decreasing temperature, O, B, A, F, G, K, and M. This is known as the Morgan–Keenan (MK) system.
What are the 9 different types of stars?
The Different Types of Stars Protostar. A protostar is what comes before a star has formed – a collection of gas that collapsed from a huge molecular cloud. T Tauri Stars. Main Sequence Stars. Red Giant Stars. White Dwarf Stars. Red Dwarf Stars. Neutron Stars. Supergiant Stars.
What are the kinds of stars?
Exploring the stars: Six star types you should know about We are familiar with the idea that the twinkling pinpricks of light in the sky are stars, like our own Sun. Solar-type Stars. Hot Blue Stars. Red Dwarf Stars. Red Giant Stars. White Dwarfs. Neutron Stars and Black Holes.
What are the 12 types of stars?
Using this system, blue stars are the hottest, and are called O-type. The coolest stars are red and are called M-type. Yellow Dwarf Stars. Orange Dwarf Stars. Red Dwarf Stars. Brown Dwarfs. Blue Giant Stars. Red Giant Stars. Red Supergiant Stars. White Dwarfs.
What is the biggest star?
The cosmos is full of objects that defy expectations. Although it’s difficult to pin down the exact traits of any given star, based on what we know, the largest star is UY Scuti, which is some 1,700 times as wide as the Sun.
What is the smallest star?
EBLM J0555-57.
Where are stars born?
Stars are born within the clouds of dust and scattered throughout most galaxies. A familiar example of such as a dust cloud is the Orion Nebula. Turbulence deep within these clouds gives rise to knots with sufficient mass that the gas and dust can begin to collapse under its own gravitational attraction.
What is the closest star to Earth?
Alpha Centauri: Closest Star to Earth. The closest star to Earth are three stars in the Alpha Centauri system. The two main stars are Alpha Centauri A and Alpha Centauri B, which form a binary pair. They are an average of 4.3 light-years from Earth.
Why do stars twinkle?
As light from a star races through our atmosphere, it bounces and bumps through the different layers, bending the light before you see it. Since the hot and cold layers of air keep moving, the bending of the light changes too, which causes the star’s appearance to wobble or twinkle.
What color is the hottest star?
White stars are hotter than red and yellow. Blue stars are the hottest stars of all.
What is the rarest star in the universe?
An O-type star is a hot, blue-white star of spectral type O in the Yerkes classification system employed by astronomers.
What is star life cycle?
A star’s life cycle is determined by its mass. The larger its mass, the shorter its life cycle. A star’s mass is determined by the amount of matter that is available in its nebula, the giant cloud of gas and dust from which it was born.
What classification of stars is the coolest?
The spectral sequence is also a colour sequence: the O- and B-type stars are intrinsically the bluest and hottest; the M-, R-, N-, and S-type stars are the reddest and coolest.
Is the sun a supergiant?
The Sun is medium-sized. The red supergiant Antares is 800 times wider than the Sun. If it was at the centre of our Solar System, it would swallow up all of the inner planets, including Earth. Like gas guzzler cars, these supergiants use all of their hydrogen and helium fuel very quickly.
Is our sun a red giant?
In a few billion years, the sun will become a red giant so large that it will engulf our planet. The sun is currently classified as a “main sequence” star. This means that it is in the most stable part of its life, converting the hydrogen present in its core into helium.
Who is bigger sun or star?
Located around 9,500 light years from Earth, and composed of hydrogen, helium and other heavier elements similar to the chemical composition of our Sun, the star has a radius 1708 (±192) times larger than our Sun’s. That is nearly 1.2 billion km, resulting in a circumference of 7.5 billion km.
What is the most beautiful star?
Now, let’s see which are the shiniest stars in our beautiful starry night sky. Sirius A (Alpha Canis Majoris) Our number one star on the list. Canopus (Alpha Carinae) Rigil Kentaurus (Alpha Centauri) Arcturus (Alpha Bootis) Vega (Alpha Lyrae) Capella (Alpha Aurigae) Rigel (Beta Orionis) Procyon (Alpha Canis Minoris).
What is biggest thing in the universe?
The largest known ‘object’ in the Universe is the Hercules-Corona Borealis Great Wall. This is a ‘galactic filament’, a vast cluster of galaxies bound together by gravity, and it’s estimated to be about 10 billion light-years across!.
Is Jupiter a failed star?
“Jupiter is called a failed star because it is made of the same elements (hydrogen and helium) as is the Sun, but it is not massive enough to have the internal pressure and temperature necessary to cause hydrogen to fuse to helium, the energy source that powers the sun and most other stars.
What is the shiniest star?
Sirius, also known as the Dog Star or Sirius A, is the brightest star in Earth’s night sky. The name means “glowing” in Greek — a fitting description, as only a few planets, the full moon and the International Space Station outshine this star.
What star is the coldest?
Washington: Imagine a star as frosty as the earth’s North Pole! It is true as a Penn State University astronomer using NASA’s Wide-field Infrared Survey Explorer (WISE) and Spitzer Space Telescopes has discovered a “brown dwarf” star that appears to be the coldest of its kind. The star has been named WISE J085510.
