Add Yahoo as a preferred source to see more of our stories on Google. Venus could make a brief appearance this weekend as it passes between the Earth and the sun. Just be warned: It won't be easy to ...

Every year in early January, Earth reaches the closest point in its orbit to the Sun, a moment astronomers call perihelion. We are slightly nearer to our star and receiving more solar energy than we ...

NEW YORK (AP) — Venus will pass between the Earth and sun on Saturday during what's called an inferior conjunction. But don't plan on seeing the linkup. The sight is extremely difficult to spot ...

Earth is the planet we have the best opportunity to understand in detail—helping us see how other rocky planets behave, even ...

A strip of cool water stretches west from South America along the equator, helping set the pace for some of the planet’s most important weather swings. That Pacific “cold tongue” helps steer the El ...

Utqiagvik has entered its Midnight Sun period after the season's final sunset on Saturday. The 84-day stretch of continuous daylight reflects the extreme seasonal shifts caused by Earth's axial tilt.

Research shows Mars' gravitational pull affects Earth's deep-sea currents and climate, causing warming cycles every 2.4 ...

A total solar eclipse takes shape today, April 8, when an overlap between the sun and the moon is expected to darken daylight skies over parts of North America and ask awestruck Earthlings to briefly ...

Earth's orbit around the solar system is slightly elliptical so on one day each year it's closest to the Sun (shown here with a halo around it). For planet Earth and our star, the Sun, today is like ...

From Mars, Earth transits the Sun four times in a 284-year cycle. The transits occur in either May or November at intervals of 100.5, 79, 25.5, and 79 years. During these events, Earth and the Moon ...

Venus could make a brief appearance this weekend as it passes between the Earth and the sun. Just be warned: It won't be easy to spot in the sun's glow, according to astronomers. The orbit Venus takes ...