EarthSky Tonight—September 20, Fastest sunsets of the year around equinox time
The fastest sunsets (and sunrises) occur at or near the equinoxes.
EarthSky Tonight—September 19, Venus brightest for 2010
Venus’ brightness will surprise you if you have never noticed it before. It is so bright that, around now, many people will report Venus as a UFO.
EarthSky Tonight—Sept 18, Best predawn of view Mercury
Mercury stands farthest west of the sun tomorrow, so it rises a maximum time before sunrise.
EarthSky Tonight—September 17, Close-up on constellation Perseus the Hero and Demon Star
Thus, Algol is what has been called an “eclipsing variable star.”
EarthSky Tonight—Sept 16, Cassiopeia and Perseus in northeast on September evenings
Perseus (the Hero) follows Cassiopeia across the night sky.
EarthSky Tonight—September 15, Moon helps you visualize Pluto spacecraft
A spacecraft is now in route to the dwarf planet Pluto, scheduled to arrive in the year 2015
EarthSky Tonight—September 14, Moon in forgotten constellation of Zodiac
Tonight, the moon shines in Ophiuchus – the “overlooked” 13th constellation of the Zodiac.
EarthSky Tonight—September 13, Waxing moon near Scorpion’s Heart
The Scorpion is one of the few constellations that looks like the creature for which it was named.
EarthSky Tonight—September 12, Moon, Venus and a double star
Our chart shows the moon, the planet Venus and the star Zubenelgenubi as they appear about one hour after sunset.
EarthSky Tonight—September 11, Moon and Venus low in west at dusk
When these brilliant sky objects get together, people across Earth’s entire globe spot them and gaze with wonder.