Mark Your Calendars: An Enormous Asteroid Will Fly Past Earth on April 13, 2029

An image of a different asteroid, called Lutetia
An image of a different asteroid, called Lutetia
ESA 2010 MPS for OSIRIS Team via Getty Images

An asteroid that’s roughly the size of three football fields is on track to whiz past Earth on April 13, 2029. Fortunately for us, it isn’t in danger of hitting our humble planet, according to Space.com.

The asteroid, which was discovered in 2004, is named Apophis after the Egyptian spirit of evil and destruction. Scientists previously suggested that there was a 2.7 percent chance of it striking Earth, but the odds were later reduced to “less than one in a million,” Don Yeomans, a retired planetary scientist for NASA, said in 2013.

Indeed, if it were ever to collide with Earth, “it would cause major damage to our planet and likely to our civilization as well,” according to a statement issued for the 2019 International Academy of Astronautics's Planetary Defense Conference [PDF].

On the bright side, the asteroid is expected to put on quite the show. Because it will come within 19,000 miles of Earth—which is pretty close by celestial standards—it will be visible to the naked eye. NASA says Apophis will soar over Australia before heading across the Indian Ocean, Africa, the Atlantic Ocean, and finally the United States. It will be visible in the eastern U.S. by mid-morning, but its closest approach will be just before 6 p.m. EDT. “By 7 p.m. EDT, the asteroid will have crossed over the United States,” NASA wrote in a statement.

Here’s what its path will look like:

Huge hunks of space rock hurtling toward Earth are not only great fodder for action-packed blockbuster films; they’re also a great way for scientists to learn more about these heavenly bodies. Although small asteroids measuring 5 to 10 meters across sometimes fly by Earth, it’s rare to get a close-up look at asteroids the size of Apophis.

“The Apophis close approach in 2029 will be an incredible opportunity for science,” Marina Brozović, a radar scientist at NASA’s Jet Propulsion Laboratory, said in a statement. “We’ll observe the asteroid with both optical and radar telescopes. With radar observations, we might be able to see surface details that are only a few meters in size.”

[h/t Space.com]

22 Facts About the Solar System

Mental Floss via YouTube
Mental Floss via YouTube

So you want to know everything there is to know about the solar system? The first and most important question you might want to get out of the way is: what, exactly, isthe solar system? As Mental Floss editor-in-chief Erin McCarthy tells us, "It's a group of celestial bodies located within the Milky Way galaxy."

At the center of these bodies is the Sun, which is orbited by eight planets; more than 150 moons; and millions of meteoroids, comets, asteroids, and a handful of dwarf planets (sorry, Pluto). But it's the Sun—a.k.a. that shining, 4.5 billion-year-old star in the middle of it all—that accounts for 99 percent of the solar system's total mass. (Think about that the next time you're shading your eyes from its glare.)

In this all-new edition of The List Show, Erin is sharing nearly two dozen fascinating facts about our solar system, including the reasoning behind Pluto's demotion (blame it on Eris, the first known dwarf planet). For more out-of-this-world facts, you can watch the full episode below.

For more episodes like this one, be sure to subscribe here.

LEGO Built a Life-Sized Astronaut Model to Celebrate the 50th Anniversary of Apollo 11

The LEGO Group
The LEGO Group

The LEGO Group is honoring the 50th anniversary of the Apollo 11 mission in a way that only LEGO can: with a life-sized astronaut model constructed entirely from LEGO blocks.

The 6-foot-3-inch model matches the space suit worn on the Moon by astronaut Edwin “Buzz” Aldrin on July 21, 1969, down to the American flag patch on his left shoulder. The front of the helmet even mimics the well-known photo of Aldrin standing on the Moon’s surface, with his helmet reflecting his own shadow and fellow Moon-walker Neil Armstrong in the near distance.

The feat took a team of 10 designers and LEGO Master Builders 300 hours and 30,000 LEGO bricks to complete, and you can see it in person on Washington, D.C.’s National Mall as part of the Smithsonian’s National Air and Space Museum’s Apollo 50 Festival from July 18 to July 20.

Though the astronaut model is already complete, there’s still tons to build—during the festival, you can help Master Builders assemble mosaic backdrops of the Moon and Mars, and you can even lend a hand in the construction of a 20-foot-tall replica of NASA's Space Launch System rocket, the vehicle NASA is developing to potentially use to send humans to Mars in the future.

The LEGO Group is also displaying an 11-foot-tall replica of a rocket at the Ontario Science Centre in Canada from now through September 2. It contains not only an impressive 80,000 bricks, but also built-in lights, sound, and a fog machine to simulate a rocket launch.

Buzz Aldrin on the Moon
Buzz Aldrin walks on the Moon.
NASA, Wikimedia Commons // Public Domain

It’s all part of a LEGO initiative to inspire a new generation of children to be enthusiastic about—and personally involved in—the future of space exploration. In addition to its brick-based efforts, the company is currently partnering with Scholastic on a program to send 50 kids to NASA Space Camp next year. “We will continue to inspire children to dream about what’s possible and to grow up to pursue STEM careers, said Bettina Inclán, associate administrator for communications at NASA’s Washington, D.C. headquarters.

Check out LEGO’s space-related collections—featuring Mars exploration, women of NASA, a recreation of the Moon landing, and more—on its online store.

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