AstronomyOnline.org
home observation science solar system stars our galaxy cosmology astrobiology exoplanets astrophotography

Coming Events

Blog

English
Farsi


Why Donate?


Quick Links
 
My Web Links Page
Career in Astronomy
Night Sky Network
The Jupiter Satellite Page
Current Trends in Astronomy
Astronomy News - by SAO
Mars Spirit Rover - VRMars
Astronomy Software
Active Astronomy
Worksheet Library - A Teacher's Resource
Telescopes for Kids Resource Guide
Hubble News Release by Category
Latest News in Astrobiology
Astronomy Picture of the day
Space Weather - official
Space Weather Now - NOAA
Space Weather
U.S. Naval Observatory Data Service
Time and Date
The Time Now
NSO Current Solar Images
Association of Lunar & Planetary Observers
OZ Scopes
Latest SOHO Images
Interactive Map for Solar Eclipses

Astronomy Online Store.

Reload the page (F5 key) to see a random selection of items below.   

Store Items

Get Firefox!


Stumble It!

 

Welcome to Astronomy Online
A legally blind photographer/astronomer on disability so I use this site to contribute to society.


Last Updated: added graphics for the 88 constellations under Observation/The Night Sky.

Ara

This site is a testament that even though I have a physical disability - legally blind - I can still do things that helps other people.

I also have a new image gallery. I call it Second Site Image Gallery.

This is an educational website. It's never too late to learn astronomy, even for those who have not completed their primary (High School) education. A GED can get you in the door to college level courses.

Visit this page: https://www.advancedwriters.com/custom-research-paper/ and get Astronomy research project writing assistance for University classes.

A guide to teach kids to draw at imagiplay.com.

3dinsider.com - 3D printers are changing science fast.


APOD:At Last GLAST
Image Credit: NASA, DOE, Fermi Gamma-ray Space Telescope Collaboration

Explanation: Rising through a billowing cloud of smoke, a long time ago from a planet very very close by, this Delta II rocket left Cape Canaveral Air Force Station's launch pad 17-B at 12:05 pm EDT on June 11, 2008. Snug in the payload section was GLAST, the Gamma-ray Large Area Space Telescope. GLAST's detector technology was developed for use in terrestrial particle accelerators. So from orbit, GLAST can detect gamma-rays from extreme environments above the Earth and across the distant Universe, including supermassive black holes at the centers of distant active galaxies, and the sources of powerful gamma-ray bursts. Those formidable cosmic accelerators achieve energies not attainable in earthbound laboratories. Now known as the Fermi Gamma-ray Space Telescope, on the 10 year anniversary of its launch, let the Fermi Science Playoffs begin.


APOD:Star Size Comparison 2
Video Credit: morn1415 (YouTube); Images Credit: NASA (typically); Music: Alpha (Vangelis)

Explanation: How big is our Sun compared to other stars? In dramatic and popular videos featured on YouTube, the relative sizes of planets, stars, and even the universe are shown from smallest to largest. The featured video begins with Earth's Moon and progresses through increasingly larger moons and planets in our Solar System. Soon, the Sun is shown and compared to many of the brighter stars in our neighborhood of the Milky Way Galaxy. Finally, star sizes are shown in comparison with the Milky Way Galaxy, galaxies across the observable universe, and speculatively, regions of a potentially greater multiverse. Note that the true sizes of most stars outside of the Sun and Betelgeuse are not known by direct observation, but rather inferred by measurements of their perceived brightness, temperature, and distance. Although an inspiring learning tool that is mostly accurate, APOD readers are encouraged to complete the learning experience -- and possibly help make future versions more accurate -- by pointing out slight inaccuracies in the video.


Get help with your dissertation at Dissertation Expert - PhD thesis writing service.
Expert Admission essay writers - admissionland.com - essay writing service.
ezassignmenthelp.com - place to visit for professional assistance with homework assignments.





Iris Nebula
- Image by Ricky Leon Murphy.

Astronomy Online is a personal resource of mine that is made public. Please enjoy the site.

ARCHIVED BLOG ENTRIES


How the Website is Organized:

Advertising within text will be in italics with a link to the ad source.

Observation - This section includes information on coordinate systems, constellations, objects visible in the night sky, and some images of the night sky of the northern and southern hemispheres.

Science - This section includes information on some of the basic science used in astronomy. There is information on the variety of tools used (like telescopes) as well as methods of using them. There is a mathematics primer, introduction to some physical processes, formulas used in astronomy, and information on computer use in Astronomy.

Solar System - As indicated, this section covers our Solar System (See Solar System App) and everything in it. It covers the Sun, planets, their moons, asteroids, comets and exotic objects like TNO's and Kuiper Belt Objects.

Stars - This section covers stars in our own galaxy. It covers the variety of stellar evolution paths. It also covers supernova, black holes, and some of the radiative processes in the interstellar medium.

Our Galaxy - This section covers our galaxy as well as some of the nearby galaxies in our own Local Group. It also covers galaxy evolution.

Cosmology - This section covers other galaxies and galaxies clusters. It also covers the big bang, relativity and dark matter.

Astrobiology - This section covers the relatively new field in astronomy - the possibility of life in our Solar System and the Universe. There is also information on some of the projects dealing with this - like SETI.

Exoplanets - This section covers the study of planets known to exist around other stars. It covers both amateur and professional involvement and shows you how you can get involved with the search as well.

Astrophotography - This section covers the fastest growing hobby of astrophotography. This section offers information and tips on photography and also features and Image Gallery.

Find the best telescope reviews at our site.

Back to Top

Advertisement

QuitSmokingCommunity.org | American Cancer Society | Mesothelioma Cancer Resources | Mesothelioma Veterans Center | MesotheliomaHelpNow | Cerebralpalsy Guidance | Recall Report

  

Search | Site Map | Buy Stuff - Store | Appendix
©2004 - 2013 Astronomy Online. All rights reserved. Contact Us. Legal. Creative Commons License
The works within is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License.