Space news: An asteroid is set to cross Earth's orbit on Thursday

Last updated at 10:25
An illustration of an asteroidGetty Images
Asteroids are small, rocky objects that orbit the Sun

An asteroid is set to cross Earth's orbit on Thursday 17 September, but don't worry, it won't come anywhere close to us!

The asteroid, known officially as Asteroid 2014 QJ33 will fly-by Earth on September 17 travelling at a speed of 19,371 miles per hour. That's 8.66 kilometres a second!

Nasa is tracking the asteroid which is predicted to be 48m to 110m, or 157 to 360 feet, wide - which could mean it is bigger than London Bridge!

But there is nothing to worry about - it will pass by our planet at a safe distance - precisely 1,592,819 miles away from Earth.

Just last week, two other asteroids passed by Earth in the space of two days.

London BridgeGetty Images
Imagine a giant space rock the size of this bridge - that's how big Asteroid 2014 QJ33 could be
What are asteroids?

Asteroids are giant space rocks in our solar system that orbit the Sun.

Sometimes they are called NEOs - Near Earth Objects.

No asteroid has hit Earth in 66 million years, since the one that caused the dinosaurs to become extinct.

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WATCH: How Nasa plans to stop asteroids hitting Earth in the future (2017)

There are lots of asteroids - over 2000 - that Nasa constantly monitors which are classed as hazardous. However, the chances of them hitting Earth are still very small.

And Nasa also has a plan to knock any pieces of space rock that could hit the planet...

Meanwhile just last month, Nasa were surprised by a car-sized asteroid that flew past the planet - it was the closest near miss with a space rock ever recorded.

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24 comments
  • I am super scared and worried!
    We should be prepared!
    Also, Wow that's huge!
    I'm terrified though!
    Message from Newsround

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  • Oh...no... I am scared...
    Message from Newsround

    We're sorry to hear that you are going through a difficult time. It could really help to talk to someone about how you are feeling. You can confide in any trusted adult such as a parent, relative or teacher, but if there is no one you feel you can speak to, you can call Childline on 0800 11 11 - calls are free, confidential and won't show up on any bill. You can also visit the Childline website at childline.org.uk, and there is a free Childline app you can download called For Me.

    Do try to speak to someone as soon as possible. You might be surprised to find out how much better you feel when you share your feelings.

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