Young moon and Mercury from Zimbabwe

The young moon and the planet Mercury adorn the western twilight after sunset on August 16.

Astronomers find teeny supermassive black hole

In a dwarf galaxy 340 million light years away, astronomers have found the smallest black hole ever observed in the center of a galaxy.

Cassini’s last close flyby of Saturn moon Dione today

The Cassini spacecraft will zip past Saturn's moon Dione on Monday, August 17 . It will be the spacecraft's final close flyby of this icy satellite.

Balanced rocks

"Happiness is not a matter of intensity but of balance, order, rhythm and harmony " - Thomas Merton

First digital map of world ocean floor

Scientists have created a new digital map of Earth's seafloor geology.

Milky Way over Paint Mines

Milky Way rising over the Paint Mines Interpretive Park near Calhan, Colorado. Photo by John Skiba.

Great Perseid photos here

Have you seen Perseid meteors in your sky? If you have had cloudy skies - or even if not - enjoy these images from all around the world.

Charting the slow death of the universe

A study of 200,000 galaxies found they had lost half their energy in just 2 billion years.

Three planets and star, from Zimbabwe

A series of photos of Mercury, Venus, Jupiter and the star Regulus in the western evening dusk, August 3-8, by Peter Lowenstein.

Where lightning flashes most

According to satellite observations, more lightning happens over land than over the oceans, and more often closer to the equator. Check out this map.