Feb. 18 marks the 95th anniversary of the discovery of our outermost planet-not-planet. Here's what to know about the short ...

The moon reaches its farthest point from Earth tonight, known as apogee, making it appear ever so slightly smaller in the ...

Although the occurrence climaxed on Jan. 21 with a conjunction—close alignment—of Saturn and Mercury, the planetary parade ...

These popular astronomy questions, answered by Astronomy magazine, will help you better understand our universe - and share ...

A colossal explosion in the sky, unleashing energy hundreds of times greater than the Hiroshima bomb. A blinding flash nearly ...

But of these planets, which is nearest to the sun? Mercury is a strange little world. There are some craters on its surface that never see sunlight. It also has the most extreme temperatures of ...

The Phoenix Mercury are set to acquire five-time All-Star Alyssa Thomas from the Connecticut Sun in a blockbuster trade, according to Alexa Philippou. In exchange for Thomas, the Sun will ...

The Indian Space Research Organisation successfully launched a second-generation navigation satellite, NVS-02, into a geosynchronous transfer orbit using a GSLV rocket in its 100th launch from ...

Tuna is a widely eaten species of fish. However, canned tuna is often the most common source of mercury in the diet. Recommendations for how often a person should eat canned tuna can vary ...

Mercury has a large metallic core that's about 85% of the planet's radius. Mercury's orbit is egg-shaped and it has no moons because of its small size, low gravity, and proximity to the sun.

Earth's orbital eccentricity is 0.017; Mars' is 0.055, and Mercury's is 0.206. HD 20794d's orbit is more elongated than any planet in our solar system, with an eccentricity of 0.4. Its 647-day ...