|
|
|
 |
|
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.
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.
|
Affordable academic writing company CheapWritingHelp.com provides students with unique astronomy research papers and science essays.
A-Writer essay writing service with the best PhD writers on Astronomy.
|
|
APOD: Two Worlds, One Sun
Left Image Credit & Copyright: Damia Bouic;
Right Image Credit: NASA, JPL-Caltech, MSSS; Digital processing: Damia Bouic
Explanation: How different does sunset appear from Mars than from Earth? For comparison, two images of our common star were taken at sunset, one from Earth and one from Mars. These images were scaled to have same angular width and featured here side-by-side. A quick inspection will reveal that the Sun appears slightly smaller from Mars than from Earth. This makes sense since Mars is 50% further from the Sun than Earth. More striking, perhaps, is that the Martian sunset is noticeably bluer near the Sun than the typically orange colors near the setting Sun from Earth. The reason for the blue hues from Mars is not fully understood, but thought to be related to forward scattering properties of Martian dust. The terrestrial sunset was taken in 2012 March from Marseille, France, while the Martian sunset was captured in 2015 by NASA's robotic Curiosity rover from Gale crater on Mars. Last week a new rover and a helicopter -- onboard Mars 2020 -- launched for Mars.
|
|
APOD: Crescent Saturn
Image Credit: NASA, ESA, SSI, Cassini Imaging Team
Explanation: From Earth, Saturn never shows a crescent phase. But when viewed from a spacecraft the majestic giant planet can show just a sunlit slice. This image of crescent Saturn in natural color was taken by the robotic Cassini spacecraft in 2007. It captures Saturn's rings from the side of the ring plane opposite the Sun -- the unilluminated side -- another vista not visible from Earth. Visible are subtle colors of cloud bands, the complex shadows of the rings on the planet, and the shadow of the planet on the rings. The moons Mimas, at 2 o'clock, and Janus 4 o'clock, can be seen as specks of light, but the real challenge is to find Pandora (8 o'clock). From Earth, Saturn's disk is nearly full now and opposite the Sun. Along with bright fellow giant planet Jupiter it rises in the early evening.
|
AstronomyOnline.org is supported by individuals and businesses around the world. We are thankful for our benefactors who help keep the server costs covered, so we can continue to provide our valuable content to readers. Meier Orthopedic Surgeon in Los Angeles treats sports related injuries with cutting edge technology. Daily Fantasy Cafe provides new user bonus codes for daily fantasy sports.
Michigan Lottery promo code provides bonus codes for folks playing the online MI lottery.
Depth Charts offers the latest NFL, NBA and MLB depth chart information for teams.
|
Sponsored Post: https://papersowl.com Tips to Write Effective Astronomy Research Papers.
|
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.
Back to Top
Advertisement
Best Long Boards Longboardbrand.com |
American Cancer Society |
Mesothelioma Cancer Resources |
Mesothelioma Veterans Center |
MesotheliomaHelpNow |
Cerebralpalsy Guidance |
Recall Report |
ConsumerSafetyGuide |
CouponChief-Ultimate Guide to Financial Resources for Cancer Patients |
Birth Injury Justice Center |
Trident University |
5 STEM Space |
KnowYourDNA
|
|
English
Farsi
