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A Million-Dollar Piece of Mars

A meteorite from Mars recently sold for more than $5 million, but a dinosaur took the prize for highest bid.

Closeup of a meteorite from Mars

Courtesy of Sotheby’s

This meteorite from Mars is one of the largest ever found on Earth.

It’s hard to imagine that a rock could ever be worth $5 million—unless that rock comes from another planet. A large meteorite from Mars recently sold at auction for $5.3 million. But while the Martian meteorite made headlines in the days leading up to the auction, another item ended up selling for a lot more money.

According to Sotheby’s auction house, a meteorite hunter discovered the rock in the Sahara Desert in the African country of Niger in 2003. The meteorite had traveled 140 million miles (225 million kilometers) to Earth after an asteroid hit the Red Planet and the force of the impact blew the rock off the Martian surface. The meteorite has been named NWA 16788 because it is the 16,778th meteorite to be found in northwestern Africa.

“This remarkable meteorite provides a tangible connection to the Red Planet—our celestial neighbor that has long captured the human imagination,” Cassandra Hatton, vice chair of science and natural history at Sotheby’s, said in a statement.

Meteorites have been discovered all over the world, but NWA 16788 is special for two reasons. First, at 54 pounds (24.5 kilograms) and about the size of a school backpack, it’s one of the largest Mars meteorites ever discovered on Earth. Second, it’s rare. More than 77,000 meteorites have been discovered on Earth, but only about 400 of them came from Mars.

Still, the Martian meteorite wasn’t the highest-valued item at the Sotheby’s auction. That honor belonged to another rare item—the skeleton of a juvenile (young) dinosaur, which sold for more than $30 million. Found near Laramie, Wyoming, in 1996, the skeleton is of a carnivorous species called Ceratosaurus nasicornis, which looked like a smaller version of Tyrannosaurus rex. It’s one of four known C. nasicornis skeletons and the only one from a juvenile C. nasicornis

A woman looks at a dinosaur skeleton that is on display in a room.

© Liao Pan/China News Service—VCG/Getty Images

This skeleton of a young dinosaur sold for more than $30 million.

Now the question is, will these valuable items end up in a private home, a museum, or elsewhere? Although neither buyer has been identified, Sotheby’s said the buyer of the dinosaur skeleton intends to loan it to a museum or other institution. Some scientists said they hoped the meteorite would also end up in an institution.

“It belongs in a museum, where it can be studied, and where it can be enjoyed by children and families and the public at large,” Steve Brusatte, a professor of paleontology and evolution at Scotland’s University of Edinburgh, told CNN.

NEWS EXTRA

Are These Rocks from Mercury?

Photo of Mercury from space with an inset of a meteorite that might be from Mercury.

NASA/JHU/APL/Carnegie Institution of Washington, © Jared Collins via The Open University; Encyclopædia Britannica, Inc.

This rock may have originated on the smallest planet in our solar system.

Martian meteorites are rare, yet meteorites from our more distant neighbor, Mercury, were long thought not to exist on Earth. But researchers now believe that two meteorites that were discovered in the Sahara Desert in 2023 may have come from Mercury.

Scientists have suspected for many years that it would be possible for meteorites from Mercury to reach Earth. That’s not true of all the planets in the solar system. For example, the strong gravitational pull and thick atmosphere of Venus probably prevent that planet from gifting us with meteorites. As for Mercury, its nearness to the Sun makes it unlikely that meteorites can reach Earth—but it’s not necessarily impossible.

“Mercury is a lot closer to the Sun, so anything that’s ejected off Mercury also has to escape the Sun’s gravity to get to us. It is dynamically possible, just a lot harder. No one has confidently identified a meteorite from Mercury as of yet,” Ben Rider-Stokes, a researcher at the Open University in the United Kingdom, told CNN.

And while we’ve sent probes to study Mercury, none of those vehicles has been able to bring back physical samples for researchers to study.

If the two meteorites from the Sahara are from Mercury, they would give scientists a new opportunity to study the composition of that planet. Still, Rider-Stokes says it’s unlikely researchers can confirm the origins of the meteorites. Not yet, anyway.

“Until we return material from Mercury or visit the surface,” he said, “it will be very difficult to confidently prove, and disprove, a Mercurian origin for these samples.”

Fun Fact

Most meteorites are found in hot and cold deserts, where the lack of rain helps preserve them and the lack of plant life makes them easier to spot. The meteorite in the photo was found in Antarctica, a cold desert.

Two people in heavy coats kneel on an icy surface and use a camera and equipment to collect data on a meteorite that is there.

NASA/JSC/ANSMET

A Martian Volcano

Image of Olympus Mons taken from above with pink tint added.

Photo NASA/JPL/Caltech

Mars is home to Olympus Mons, the tallest volcano in the solar system. Rising 14 miles (22 kilometers) above the surface of Mars, Olympus Mons is more than twice as tall as Mount Everest, the highest point on Earth.

Olympus Mons is a shield volcano, meaning it is wide and dome-shaped. Volcanos get bigger over time as lava on the surface dries and builds up. Scientists believe Olympus Mons reached its incredible size through a series of eruptions that took place over many years—possibly more than a billion!

Is Olympus Mons still active? Scientists think it’s possible, which means the volcano has the potential to erupt again.

More About Mars

A colorful dish shows the Roman god Mars in Roman military clothing and carrying a sword and shield.

The Metropolitan Museum of Art, New York, (Robert Lehman Collection, 1975, 1975.1.1228)

This dish shows Mars, the Roman god of war. The dish was made in France around 1605, long after the end of the Roman Empire.

The ancient Romans named Mars after their god of war because the planet’s red color reminded them of blood! Learn more about the Red Planet at Britannica.

WORD OF THE DAY

specimen

PART OF SPEECH:

noun

Definition:

: something (such as an animal or plant) collected as an example of a particular kind of thing

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