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  2. Betelgeuse - Wikipedia

    en.wikipedia.org/wiki/Betelgeuse

    Betelgeuse is the brightest near-infrared source in the sky with a J band magnitude of −2.99; [95] only about 13% of the star's radiant energy is emitted as visible light. If human eyes were sensitive to radiation at all wavelengths, Betelgeuse would appear as the brightest star in the night sky.

  3. An asteroid will temporarily eclipse one of the brightest ...

    www.aol.com/asteroid-block-one-brightest-stars...

    An asteroid in our solar system will temporarily block the light of Betelgeuse, one of the brightest stars in the night sky, Monday evening and early Tuesday morning. The rare cosmic event will be ...

  4. List of brightest stars - Wikipedia

    en.wikipedia.org/wiki/List_of_brightest_stars

    The Sun is the brightest star as viewed from Earth, at −26.78 mag. The second brightest is Sirius at −1.46 mag. For comparison, the brightest non-stellar objects in the Solar System have maximum brightnesses of: the Moon −12.7 mag [ 1 ] Venus −4.92 mag. Jupiter −2.94 mag. Mars −2.94 mag.

  5. Winter Triangle - Wikipedia

    en.wikipedia.org/wiki/Winter_Triangle

    Winter stars with the Winter Triangle front and centre, forming a diamond (actually kite) or cross with Saturn above. The Winter Triangle is an astronomical asterism formed from three of the brightest stars in the winter sky. It is an imaginary equilateral triangle drawn on the celestial sphere, with its defining vertices at Sirius, Betelgeuse ...

  6. The red giant star Betelgeuse is closer than we thought ... - AOL

    www.aol.com/news/red-giant-star-betelgeuse...

    October 19, 2020 at 10:00 AM. Betelgeuse is one of the best-known stars in the night sky, as well as the easiest to find. New examinations of this behemoth star suggest it is both smaller — and ...

  7. Equatorial coordinate system - Wikipedia

    en.wikipedia.org/wiki/Equatorial_coordinate_system

    Model of the equatorial coordinate system. Declination (vertical arcs, degrees) and hour angle (horizontal arcs, hours) is shown. For hour angle, right ascension (horizontal arcs, degrees) can be used as an alternative. The equatorial coordinate system is a celestial coordinate system widely used to specify the positions of celestial objects.

  8. Astronomical coordinate systems - Wikipedia

    en.wikipedia.org/wiki/Astronomical_coordinate...

    The equatorial describes the sky as seen from the Solar System, and modern star maps almost exclusively use equatorial coordinates. The equatorial system is the normal coordinate system for most professional and many amateur astronomers having an equatorial mount that follows the movement of the sky during the night. Celestial objects are found ...

  9. Comet E3 to make closest approach to Earth tonight - AOL

    www.aol.com/weather/see-green-comet-zip-earth...

    A sky chart showing the location of Comet C/2022 E3 (ZTF) throughout January. (NASA) The easiest time to see the comet will be during the second weekend of February as it passes incredibly close ...