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DTSTART;TZID=America/Toronto:20250730T190000
DTEND;TZID=America/Toronto:20250730T220000
DTSTAMP:20260419T080546
CREATED:20250626T184139Z
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UID:19995-1753902000-1753912800@www.hamiltonrasc.ca
SUMMARY:Crescent Moon near Spica Again (evening)
DESCRIPTION:After a previous visit on July 3\, the moon’s trip around Earth will bring it back to shine near Virgo’s brightest star Spica again on Wednesday evening\, July 30. As darkness falls\, look low in the western sky for bright\, white Spica twinkling several finger widths to the upper left (or celestial east) of the pretty crescent moon. Skywatchers located in more westerly time zones will see the moon closer to the star – clear evidence of our natural satellite’s orbital motion. (Image – Jul30-2025 at 930 pm – Crescent Moon near Spica Again.jpg)Planets\nSkywatching Terms\nGibbous: Used to describe a planet or moon that is more than 50% illuminated.\nAsterism: A noteworthy or striking pattern of stars within a larger constellation.\nDegrees (measuring the sky): The sky is 360 degrees all the way around\, which means roughly 180 degrees from horizon to horizon. It’s easy to measure distances between objects: Your fist on an outstretched arm covers about 10 degrees of sky\, while a finger covers about one degree.\nVisual Magnitude: This is the astronomer’s scale for measuring the brightness of objects in the sky. The dimmest object visible in the night sky under perfectly dark conditions is about magnitude 6.5. Brighter stars are magnitude 2 or 1. The brightest objects get negative numbers. Venus can be as bright as magnitude minus 4.9. The full moon is minus 12.7 and the sun is minus 26.8.\nTerminator: The boundary on the moon between sunlight and shadow.\nZenith: The point in the sky directly overhead.\nNight Sky Observing Tips\nAdjust to the dark: If you wish to observe fainter objects\, such as meteors\, dim stars\, nebulas\, and galaxies\, give your eyes at least 15 minutes to adjust to the darkness. Avoid looking at your phone’s bright screen by keeping it tucked away. If you must use it\, set the brightness to minimum – or cover it with clingy red film.\nLight Pollution: Even from a big city\, one can see the moon\, a handful of bright stars\, and the brightest planets – if they are above the horizon. But to fully enjoy the heavens — especially a meteor shower\, the fainter constellations\, or to see the amazing swath across the sky that is the disk of our home galaxy\, the Milky Way — rural areas are best for night sky viewing. If you’re stuck in a city or suburban area\, use a tree or dark building to block ambient light (or moonlight) and help reveal fainter sky objects. If you’re in the suburbs\, simply turning off outdoor lights can help.\nPrepare for skywatching: If you plan to be outside for more than a few minutes\, and it’s not a warm summer evening\, dress more warmly than you think is necessary. An hour of winter observing can chill you to the bone. For meteor showers\, a blanket or lounge chair will prove to be much more comfortable than standing\, or sitting in a chair and craning your neck to see overhead.\nDaytime skywatching: On the days surrounding first quarter\, the moon is visible in the afternoon daytime sky. At last quarter\, the moon rises before sunrise and lingers into the morning daytime sky. When Venus is at a significant angle away from the sun it can often be spotted during the day as a brilliant point of light – but you’ll need to consult an astronomy app to know when and where to look for it. When large sunspots develop on the sun\, they can be seen without a telescope – as long as you use proper solar filters\, such as eclipse glasses. Permanent eye damage can occur if you look at the sun for any length of time without protective eyewear.
URL:https://www.hamiltonrasc.ca/event/crescent-moon-near-spica-again-evening/
CATEGORIES:Astronomical Events
ATTACH;FMTTYPE=image/jpeg:https://www.hamiltonrasc.ca/wp-content/uploads/2025/06/Jul30-2025-at-930-pm-Crescent-Moon-near-Spica-Again.jpg
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