Venus is much brighter than any other planet viewed in Earth’s sky. It’s the third-brightest object in the sky, after the sun and moon, and right now it’s heading for another time of greatest brilliancy around July 10, 2015. Click the links inside to learn why Venus is so bright, and when to see it as its brightest in 2015.
If you’re celebrating the 4th of July by attending a fireworks display, maybe you’ll look up and wonder: What creates those red, orange, yellow, green, blue and purple colors exploding in the night sky?
Happy birthday to all you July babies! Your birthstone, the ruby, is among the most highly prized of gemstones. Large rubies are harder to find than large diamonds, emeralds and sapphires.
If you run a damp finger along the rim of a glass, you might hear a faint, ghostly hum – the resonant frequency of the glass. To shatter the glass, a singer’s voice has to match that frequency, or pitch, at an extremely loud level, and the glass must have microscopic defects.
Solstice – year’s longest day for northern part of Earth – was Sunday. But our hottest weather is still to come. Likewise, the coldest weather is ahead for S. Hemisphere.
It is indeed possible to see the whole circle of a rainbow – but conditions have to be just right.
Fireflies are sometimes called lightning bugs. Many a child has spent a summer evening chasing them. And maybe you’ve wondered – how and why are these insects able to light up?
Warming temps, and the rise and fall of coasts, complicate measurements of sea level. How do scientists establish sea level on a constantly changing Earth?
Scientists agree that there’s oxygen from ocean plants in every breath we take.