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Feedback Q&A on Astronomy

by Ron Kurtus

Readers have sent in a total of 302 comments and questions on Astronomy issues. They are listed according to date.

You can read them to further your understanding of the subject.



List of most recent 10 letters

Topic

Title

Country

General I don't understand Astronomy at all Canada
 
Moon Correcting number of Jupiter's moons USA
 
General Wants scholarship in Physics USA
 
Black Holes Can a graviton escape from a black hole? India
 
The Earth Galaxy versus Galactic motion USA
 
General Topics Why are orbits elliptical? Nigeria
 
General Astronomy comments Bangladesh
 
The Earth Distinctive features unique to earth. USA
 
Our Solar System What are companions of planets called? USA
 
Keplers Laws Wants permission to use image USA
 

Next 10

 





I don't understand Astronomy at all

Topic: General

Question

February 14, 2017

I don't understand Astronomy at all. I don't enjoy studying about a whole new world that I've never visited. Is their an easy way to understand Triangulation, Radio telescopes?

Jawerriya - Canada

27880

Answer

It can be interesting to look into the night sky and see all the numerous stars in the sky, as well as their movement throughout the year. Some people like to learn the constellations and arrangement of the stars.

However, Astronomy can delve deeper to find out what the planets and stars are made of. It is a scientific study that some people are interested in and others are not.

Triangulation is a method to determine distance using trigonometry. In Astronomy, it is useful to approximate distance of far-off objects.

A radio telescope uses radio waves instead of light ways to detect distant objects in space. In some situations, it works better than visible light.

Although teachers can often learning many facts without making the subject interesting, it is good to find things about the subject you like.

Best wishes for success in your studies.

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Correcting number of Jupiter's moons

Topic: Moon

Question

January 24, 2017

On your article about the Earth's Moon, you said the Earth has one Moon and Jupiter has 9 moons. This is incorrect, NASA has recently discovered that Jupiter has 67 moons! I believe the number is up to 67 now. Up until a few years ago, they knew it had at least 63 moons. Galileo discovered 4 of them in the early 1600s. I can only see 5 of them with my modern day, powerful telescope.

David - USA

27823

Answer

Thanks for the information. I corrected the Characteristics of our Moon page as well as added material on Jupiter and Jupiter's 67 Moons.

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Wants scholarship in Physics

Topic: General

Question

December 19, 2016

how I get free scholarship by physics?

Minale - USA

27575

Answer

Most high schools have lists of scholarships available. Your physics or astronomy teacher should also be able to provide help in getting a scholarship.

Some websites to check include:
SPS Scholarships
Scholarships for Physics Majors

Various colleges also have information on getting a scholarships.

Best wishes for your success in getting an education.

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Can a graviton escape from a black hole?

Topic: Black Holes

Question

May 19, 2016

Does graviton escape from the black holes? If no then why other celestial objects feels their gravity, if yes then how can graviton escape from the place from where even light cant escape?

Vinamra - India

27017

Answer

A graviton is a hypothetical particle that is responsible for gravitational forces, as part of the quantum theory of gravitation. Since it is supposed to be the source of gravitational forces through an exchange between masses, it really would not be moving freely like in escaping from a Black Hole.

Other celestial object do feel the gravitational forces from a Black Hole, as witnessed by objects being drawn into the hole. But its forces are reduced as the square of the distance from the Black Hole.

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Galaxy versus Galactic motion

Topic: The Earth

Question

May 1, 2016

What is the difference between Galaxy and Galactic motion?

- USA

26973

Answer

A galaxy is a system of stars and other materials that are bound together by gravitational forces. The Milky Way is an example of a galaxy.

Galaxies tend to rotate very slowly about some center area. They also move in space as compared to other galaxies.

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Why are orbits elliptical?

Topic: General Topics

Question

February 27, 2016

How does the obit the elliptic

Akin - Nigeria

26814

Answer

The orbit of a planet around the Sun should be a circle, however there are gravitational forces from the other planets that distort the orbit into an elliptical shape.

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Astronomy comments

Topic: General

Question

December 24, 2015

Comments:

THE SUN MOVES ROUND THE EARTH

What is the Earth’s gravitational force?

Scientists Newton formula is Wrong

The sun is flat!

Moon is not Earth’s satellite

SUN IS NOT A PLANET

NOTE: The arguments have been deleted because they are too extensive to be published.

ROBIUL ISLAM - Bangladesh

26644

Answer

No, the Sun does not move around the Earth. that has been proven many times.

The Earth’s gravitational force is approximately 9.8 m/s^2 times the mass of the object.

Newton's Third Law is correct. A force requires an opposite force.

The Sun is not flat. Your sources are inaccurate.

The Moon is Earth’s satellite. This is by definition.

It is true that our Sun is not a planet. It is a sun.

The starts do not move around the Sun. Your sources of information are incorrect.

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Distinctive features unique to earth.

Topic: The Earth

Question

September 27, 2015

What are 2 distinctive features unique to earth.

Plz get back to me soon.
Thank you

Sarah - USA

26409

Answer

Features of the Earth that are unique with respect to the other planets in our Solar System include an atmosphere and temperatures that can support life (as well know it) and oceans consisting of water.

Some of the other planets have atmospheres of other gases and temperatures either too high or too low to support life. Some have oceans but not made up of water.

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What are companions of planets called?

Topic: Our Solar System

Question

June 10, 2015

The companions of planets are called

- USA

26082

Answer

Companions of planets are called "moons" or "natural satellites".

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Wants permission to use image

Topic: Keplers Laws

Question

January 19, 2015

I am writing a book on Moon and space travel. The book is meant for promoting science learning among young adults. An Indian publisher has agreed to publish the book. I want to use the image from your article depicting Kepler's second law. Please give me your permission and tell me how would you like me to write credits.
Thank you
Ramesh Shishu, P.hD.

Ramesh - USA

25712

Answer

Congratulations on writing your book.

Yes, you have permission to use the image. I would appreciate it if you would state: Permission from Ron Kurtus, School for Champions (www.school-for-champions.com/astronomy/keplers_laws.htm) or something to that effect.

Note that I have updated the image to improve its resolution. I you want, I can send you a higher resolution file as a JPEG that would be more appropriate for a print publication.

Best wishes for success with your book.

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