According to NASA, two huge asteroids will be racing past our planet this weekend.
The first asteroid, called C01 in 2010, has a diameter of approximately 120 to 260 meters. At the upper end of this estimate, this roughly equals the size of the QE2.
The second asteroid, named the 2000 QW7, is estimated to be up to 650 meters in diameter, indicating that it could be the size of the tallest building in the world, the Burj Khalifa.
Luckily, NASA has ruled out any possibility that an asteroid could pose a threat to our planet.
Lindley Johnson, Program Director of NASA's Planetary Coordination Office, said, "These asteroids have been well observed since 2000 and since 2010, and their orbits are well known.
"These two asteroids travel about 14 lunar months from Earth or about 3.5 million miles from Earth, but small asteroids move so close to Earth all the time."
2010 C01 will safely pass through the earth tomorrow at 04:42 BST, while 2000 QW7 will pass later at 12:54 BST.
Near-Earth Objects (NEOs), including asteroids and comets, are tracked and monitored by the NASA Center for Near-Earth Object Studies.
Video not available
So far, NASA has discovered more than 20,000 NEOs, with an average of 30 new objects detected per week.
Fortunately, according to NASA, no asteroids or comets are currently on a collision course with Earth.
However, US space chief Jim Bridenstine warned earlier this year that a killer asteroid could invade Earth in our lives unless we do more to protect the planet.
"It's not about Hollywood, it's not about movies," said Bridenstine. "Ultimately, it's about protecting the only planet we know today to house life – and that's planet Earth."