Earth’s Moon
Earth and the Moon are more like a double planet than a planet and a moon. The Moon is quite […]
Jupiter’s Moons
Io: Fire World Robotic probes may someday provide close-up views of some of the most remarkable vistas in the solar
Saturn
Like its larger sibling, Jupiter, Saturn is a ball of hydrogen and helium gas wrapped around a heavy core. Instead
Jupiter
As the Great Red Spot demonstrates, Jupiter is a world of superlatives. It is the largest planet in the solar
Mars
Scientists, too, have speculated about the possibility of life on Mars. During the 1800s, some leading astronomers thought that an
Venus
The Venusian clouds kept astronomers from seeing the planet's surface. Without visible landmarks, they could not measure how fast Venus
Color of Stars
Students observe colors in the flame of a burning candle to explore connections between matter, light, color, and temperature —
The Milky Way
Stretching across the dark night sky, not easily visible when the Moon is in the sky, is a faint irregular
Virgo
In mythology, Virgo was associated with the harvest. It represented a harvest goddess or the daughter of a goddess. The
Aquarius
Aquarius, one of the 12 constellations of the zodiac, is best viewed during the evening skies of late summer and