The oddball asteroid Lutetia is a rocky remnant of the material that formed Earth, Venus and Mercury about 4.5 billion years ago, a new study suggests.

It can be hard to determine how much seafood you can eat safely while meeting your nutritional needs. This online seafood calculator lends a helping hand.

A medium-size solar flare erupted from the sun this weekend, hurling a cloud of plasma and charged particles toward Earth on a cosmic path that is expected to d

An impact basin spotted on Mercury with two smaller craters above it looks remarkably like the sweet treat-loving Cookie Monster muppet of "Sesame Street" fame.

This is a great week for planetary observers. Mercury is in its best position as a "morning star" for observers in the Northern Hemisphere while Jupiter is at i

The discovery of huge amounts of water ice and possible organic compounds on the heat-blasted planet Mercury suggests that the raw materials necessary for life

Spliced from thousands of screenshots of the planets, NASA has created a new video of Mercury that shows off the planet's diversity in terrain.

A video from a NASA spacecraft studying the sun has captured an unexpected sight.

In hopes of inspiring others to appreciate Earth, Nickolay Lamm transplanted the Big Apple to all of the planets in our solar system.

By analyzing ear wax from a deceased blue whale, scientists gained clues to years of chemical exposure.

Mercury, the smallest planet in our solar system, may hold clues to understanding how the Earth's moon was born.

This week in the hour before sunrise early morning stargazers will get a double treat: the planet Mercury and two special comets.

For the next few weeks, about half an hour before sunrise, Mercury will peek over the southeastern horizon for observers in the northern hemisphere.

The surface of Mercury is shrinking faster than previously thought, photos from a NASA spacecraft orbiting the tiny planet reveal.

An analysis of dozens of pyroclastic ash deposits suggests that Mercury had an long history explosive volcanism.

A NASA spacecraft slammed into the surface of Mercury on Thursday, April 30, bringing a groundbreaking mission to a dramatic end.

The dream of a space-faring humanity is deep-rooted.

Mercury, named for the Roman messenger of the gods, is the smallest planet in our solar system and the closest to the sun. Check out these amazing images

This devilishly difficult quiz will separate the auto experts from the pretenders.

How smart are you when it comes to keeping clean and germ-free? Take our quiz and find out.

Test your knowledge of the wild world of animal mating.

Think you're an expert at talking trash? Then you won't be afraid to test your recycling knowledge.

From what they eat to wear they live, test your giant panda knowledge with this quiz.

Crows and ravens are some of the smartest animals on the planet. So what do you know about them?

Whether you watch them at your backyard bird feeder or just see them when you're hiking, how much do you really know about our feathered friends?

What do you know about your kidneys? They don't get the acclaim of the brain or the heart, but these small organs work nonstop to keep your body healthy.

Let's see how well you know your own species' family tree.

Test your knowledge about frogs and toads with this quiz.

You go to the beach to relax and soak up the sun. But how much do you really know about the waves and the sand?

How much do you know about these ancient shelled reptiles?

Want to delve inside someone's subconscious? Graphology might hold a key.

Sometimes scientists infuse some pop culture into their species names. Can you match the celeb to the critter?

Before you scoop up your next bowl of ice cream, test your knowledge about everyone's favorite summer treat.

They help you see the world, but how much do you really know about the windows to your soul? Test your knowledge.

From paws and hooves to claws and talons, a variety of animal feet walk upon the Earth. Can you recognize the animal based on its foot alone?

Can you live without your morning coffee or afternoon soda? See how savvy you are about your daily buzz.

Many breeds have stand-out physical characteristics that make it easy to identify them, but can you name the dog from its ears?

When your head hits the pillow at night, do creatures lurk? See how much your know about terrifying dreams.

There's a whole medicine chest in the garden. Do you know which plants to use for what ailments? Test your holistic herb wits here.

How much do you really know about the ground under your feet? Test your knowledge with this quiz.

Take the tail end of a hint and see if you know the answer!

How well-versed are you with our planet's fascinating geology? Test your knowledge and find out.

There are those of us who aced AP calculus, and there are those of who can't figure out the tip. Take our quiz to find out just how much of a math whiz you are.

You say 'please' and 'thank you' and don't talk with food in your mouth, but how much do you know about minding your manners?

There's no confusing a giraffe baby with any other creature. But some animal infants don't always resemble their parents.

Not all penguins make their home in icy Antarctica. See if you know where in the world to find these penguin species.

These iconic pink birds are immediately recognizable, but how much do you know about them? Test your knowledge of these beautiful birds!

Life across the globe depends on bees, butterflies, birds, bats and other pollinators. Test your knowledge about these vital creatures.

From spring showers to summer thunderstorms, rain can fall any time of year. But how does it work?

See if you know the difference between a bedbug, a beetle and these other creepy-crawlies.