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1. Videos

   • 

     2:45

     youtube.com

     Magnitudes: How astronomers measure brightness and use it to measure distances

     4 Aug 2022

     17.3K views

   • 

     11:16

     youtube.com

     Star Magnitude (Brightness) Explained

     5 Feb 2021

     42.2K views

   • 

     1:32

     space.com

     Brightest Stars: Luminosity & Magnitude

     11 Oct 2017

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2. People also ask

   What is the bright stars calculator?

   • Our Bright Stars Calculator tells you all about the visible stars in the night sky—tonight or a date in the future—all customized to the location that you select! We cover every day from 1970 through 2036. The magnitude of the star, i.e., its brightness! Most visible stars will rise and set in the night sky, just as the full Moon or the planets do.

   Bright Stars in the Sky Tonight: Rise, Set, and Transit Times

   www.almanac.com/astronomy/bright-stars

   See all results for this question

   How do astronomers determine the brightness of a star?

   • Determining Stellar Brightnesses. Astronomers speak of both apparent and absolute magnitudes. Apparent magnitude is the brightness of a star as seen from Earth. Absolute magnitude, however, is the brightness of a star supposing that it was located exactly 10 parsecs (about 32.6 light years) away from Earth.

   SkyEye - Brightest Stars

   www.obliquity.com/skyeye/misc/bright.html

   See all results for this question

   What is the brightness of a star in terms of?

   • The brightness of a star is usually expressed in terms of magnitudes. This scale is based on that devised by the second-century BC Greek astronomer Hipparchus who labelled the brightest stars as 'first magnitude', the next brightest as 'second magnitude', and so on with the faintest stars visible labelled as 'sixth magnitude'.

   SkyEye - Brightest Stars

   www.obliquity.com/skyeye/misc/bright.html

   See all results for this question

   How do you know if a star is bright?

   • Brightness is measured in magnitudes (the smaller the magnitude the brighter the star). This is how bright it looks to your eye. On a dark night in a remote area we can see with the naked eye stars of 6th magnitude or brighter. In a city, we can see stars of 1st, 2nd or 3rd magnitude or brighter.

   Imagine the Universe!

   imagine.gsfc.nasa.gov/ask_astro/stars.html

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3. www.almanac.com › astronomy › bright-starsBright Stars in the Sky Tonight: Rise, Set, and Transit Times

   www.almanac.com › astronomy › bright-stars

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   What is that bright star in the sky tonight? Our Bright Stars Calculator tells you all about the visible stars in the night sky—tonight or a date in the future—all customized to the location that you select!

   • Alaska

     Alaska - Bright Stars in the Sky Tonight: Rise, Set, and...

   • Ohio

     Ohio - Bright Stars in the Sky Tonight: Rise, Set, and...

   • Indiana

     Indiana - Bright Stars in the Sky Tonight: Rise, Set, and...

   • Delaware

     Delaware - Bright Stars in the Sky Tonight: Rise, Set, and...

   • Nevada

     Nevada - Bright Stars in the Sky Tonight: Rise, Set, and...

   • Tennessee

     Tennessee - Bright Stars in the Sky Tonight: Rise, Set, and...

   • Pennsylvania

     Pennsylvania - Bright Stars in the Sky Tonight: Rise, Set,...

   • Michigan

     Michigan - Bright Stars in the Sky Tonight: Rise, Set, and...

4. skyandtelescope.org › observing › interactive-sky-Interactive Sky Chart | Map Your Night Sky - Sky & Telescope

   skyandtelescope.org › observing › interactive-sky-

   • Cached

   • What Is The Interactive Sky Chart?
   • How Do I Use The Interactive Sky Chart to Explore The Night Sky?
   • Want to Learn More?

   Powered by Heavens Above, our interactive viewer charts the night sky as seen by eye. The map includes the Moon, stars brighter than magnitude 5, the five bright planets (Mercury, Venus, Mars, Jupiter, and Saturn), and deep-sky objects that can be seen without the use of optical aid.

   See full list on skyandtelescope.org

   Learn sky chart basics in our short tutorial: The interactive sky chart offers a lot in the way of customizing what you want to see. Chart the stars and planets visible to the unaided eye from any location, at any time of day or night, on any date between the years 1600 to 2400 by entering your location, either via zip code, city, or latitude/longi...

   See full list on skyandtelescope.org

   Like what you see here? You'll get an even bigger, accurately mapped sky chart, along with oodles of stargazing information, in the pages of Sky & Telescopemagazine.

   See full list on skyandtelescope.org

5. www.timeanddate.com › astronomy › nightNight Sky Map & Planets Visible Tonight in Great Britain

   www.timeanddate.com › astronomy › night

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   Sky map showing night sky tonight in Great Britain, England, United Kingdom. What planets are visible? Where is Mars, Saturn or Venus? What is the bright star in the sky?

6. www.omnicalculator.com › physics › luminosityLuminosity Calculator

   www.omnicalculator.com › physics › luminosity

   • Cached

   6 days ago · This luminosity calculator is a handy tool that allows you to calculate the energy emitted by stars and how bright they appear when seen from Earth. Thanks to this calculator, you will also be able to determine the absolute and apparent magnitudes of stars.

7. www.skyatnightmagazine.com › advice › brightest-starBrightest star in the sky? Find out which star is brightest ...

   www.skyatnightmagazine.com › advice › brightest-star

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   The brightest star in the night sky changes more often than you might think. This is our guide to which star is brightest and when.

8. www.skymaponline.netSky Map Online

   www.skymaponline.net

   Sky Map Online web app provides free, printable & interactive sky charts for any location, time and viewpoint. It shows the night sky stars up to magnitude 12, planets and DSO.

9. stellarium-web.orgStellarium Web Online Star Map

   stellarium-web.org

   2 days ago · Stellarium Web is a planetarium running in your web browser. It shows a realistic star map, just like what you see with the naked eye, binoculars or a telescope.