Who is the person who discovered galaxies outside the milky way?

Answer 1

Edwin Hubble was the first to suggest that the Milky Way was just one among a number of galaxies or, as he called them, "pocket universes". Other individual galaxies had been observed previously, but they had been believed to be stars within the Milky Way.
astronomers.

Answer 2

Edwin Hubble is credited with discovering galaxies outside the Milky Way. In the 1920s, using the telescopes at Mount Wilson Observatory, he observed and classified galaxies based on their shapes and distances, providing key evidence for the expanding universe theory.

Answer 3

In 1923, Hubble found dozens of these variable stars in Andromeda, and determined their distance. He calculated that Andromeda must be at least 10 times farther away than the farthest stars in the Milky Way. The Andromeda nebula was really the Andromeda galaxy. This discovery implied that the other, even fainter, spirals were probably also galaxies even farther away.

Answer 4

Edwin Hubble was the first astronomer to describe spiral galaxies. Shu and Lin were the first to vocalise an acceptable theory for the structure.

Galaxies had been discovered much earlier but were not intially described as or categorised as spiral galaxies.

Answer 5

It's Edwin Hubble. That's why the Hubble Space telescope was named after him.
Not only did he discover that galaxies exist, he discovered that galaxies move away from each other with a constant acceleration.
This led to the Big Bang theory, that some time in the earliest past everything started off in a single point.
And as it, then, exploded, everything flies away with a constant acceleration.

Answer 6

The discovery of external galaxies had to wait for a yardstick to be produced that could measure the large distances. Cepheid variables were discovered in the Andromeda nebula M31 by Edwin Hubble in 1924 that showed its distance and demonstrated it lies outside the Milky Way.

Cepheid variables are a class of variable stars that have a brightness that cycles very regularly, and the period of the cycle depends on the size and absolute brightness of the star. Delta Cephei is the best-known Cepheid variable star.

The relationship between the brightness and the period was discovered by Henrietta Leavitt after a study of Cepheid variables in the Magellanic clouds. All those stars are at approximately the same distance so she was able to calculate the period/luminosity relationship that they follow.

If a Cepheid variable is discovered and its period measured, its absolute magnitude can be calculated and compared with its visual magnitude to find the distance.

Answer 7

Write down the symbols for all the consonants in each of the following words: (10)

1. Decision 2. Phase 3. Fissure 4. Avenue 5. Pharmacy

6. Thirsty 7. Gather 8. Maximum 9.listen 10. Censure

Answer 8

They were discovered by astronomers using telescopes.

Answer 9

It was Edwin Hubble the astronomer which also gave the Hubble telescope its name.

Answer 10

Clyde W. Tombaugh in February 18, 1930