The brightest stars to the eye are 1st magnitude, and dimmest stars to the eye are 6th magnitude. How does stellar magnitude work in astronomy?| EarthSky | Updates on your cosmos and world
This chart shows the 3 stars of the Summer Triangle, in the east in the evening in July. Note Vega’s constellation, Lyra. The Summer Triangle is big! A 12-inch (1/3-meter) ruler, placed at an arm’s length from your eye, will span the approximate distance from Vega to the star Altair. And an outstretched hand will fill the gap between Vega and Deneb. You can see the Summer Triangle in the evening from around May through the end of every year.The Summer Triangle| EarthSky
The bright star Deneb is part of the famous Summer Triangle asterism. Its constellation Cygnus the Swan flies across the July evening sky.Deneb or Alpha Cygni is the northernmost star in the famous Summer Triangle, a prominent asterism visible in the east on July and August evenings. Three bright stars make up the Summer Triangle. They are the brightest stars in three separate constellations. Deneb’s constellation is Cygnus the Swan. In a dark sky, you can imagine the Swan, flying along the...| EarthSky
Altair, in the constellation Aquila the Eagle, makes up the Summer Triangle along with Deneb and Vega. You’ll find this large triangle in the east in the evening in July. As the months pass, the Triangle will shift westward. It’ll grace our skies until around the year’s end. Chart via EarthSky.The bright star Altair, aka Alpha Aquilae, shines as the brightest star in the constellation Aquila the Eagle. Mostly known for being one of the three Summer Triangle stars, this star is distincti...| EarthSky