Types of evidence that astronomers use to estimate the age of the universe and stars include _____.

Biology

2 answers:

Goshia [24]3 years ago

7 0

Chemical composition of the Sun and the movement of galaxies.

Astronomers are scientists who study the universe and the objects within it such as the sun, galaxies, stars, planets, star forming regions, and the evolution of the universe. Chemical composition of the Sun and the movement of galaxies are the types of evidence that astronomers use to estimate the age of the universe and stars. Astronomers detect the movement of galaxies by viewing its light spectrum. Astronomers can measure the expansion rate of the universe accurately by taking the measurements of many galaxies. Also, the chemical composition of the sun gives astronomers some idea about the age of the universe and stars.

lbvjy [14]3 years ago

3 0

Answer:

include the movement of galaxies and the chemical composition of the sun.

Explanation:

To estimate the age of the universe and stars, astronomers observe and evaluate the movement of galaxies and the composition of the sun.

Galaxies are formed by clusters of various celestial bodies, mainly planets, stars, cosmic dust and other astronomical elements that are in a common center. The force of gravity is mainly responsible for the union of the components of a given galaxy.

The Sun, in turn, is composed mainly of the elements hydrogen and helium, but it also has other elements such as iron, nickel, oxygen, silicon, etc. Its energy is created in the deep zone of the nucleus, with very high temperature and pressure and there are nuclear reactions. Studies carried out by scientists have found that 700 million tonnes of the hydrogen element are turned into ashes of the helium element, exactly every second.

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Brachydactyly type d is a human autosomal dominant condition in which the thumbs are abnormally short and broad. in most cases,

Morgarella [4.7K]

A hereditary characteristic, brachydactyly type D shows autosomal predominance and is regularly created or acquired freely of other genetic qualities. The condition is related to the HOXD13 quality, which is main in digital formation and development.

Further explanation

Brachydactyly

Brachydactyly is a shortening of the fingers and toes because of curiously short bones. This is an acquired condition, and much of the time does not present any issues for the individual who has it. There are various kinds of brachydactyly, in view of which bones are abbreviated. This condition can likewise be a side effect of another hereditary issue. Except if there is a going with confusion that produces side effects, or the abbreviated digits weaken the utilization of hands and feet, there is no treatment required for brachydactyly. Most common type of brachydactyly is d type. In this type end bones of the thumbs are shortened.

Symptoms

The indications of brachydactyly are generally present during childbirth, however, it's conceivable that abbreviated appendages become increasingly evident with development and advancement. The fundamental symptoms of brachydactyly are fingers, toes, or both that are shorter than typical. Surgery is the only solution for this.

Reasons behind brachydactyly

It is an autosomal dominant disorder, which means you just need one parent with the quality to acquire the condition. It's idea that two distinct transformations in a specific quality add to brachydactyly. Now and again, it's conceivable that brachydactyly is brought about by medicines that the mother takes during pregnancy. It might likewise be brought about by bloodstream issues to the hand and feet, particularly in newborns. Brachydactyly D is symptomatic of a hereditary disorder. This may be due to incomplete dominance.

Answer details

Subject: Biology

Level: College

Keywords