The Interstellar Asteroid

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An artist's impression of the interstellar asteroid 'Oumuamua.
An artist's impression of the first interstellar asteroid discovered (image credit: NASA).

There are almost one million asteroids and comets in our solar system. And every single one of them (we think) formed here, within our solar system, alongside the planets just over 4.5 billion years ago. However, in the summer months of 2017, an object not borne from the Solar System made a silent entrance, whipped around the Sun in September 2017, and started heading out again, never to return. This object, now named ‘Oumuamua, was the first asteroid discovered from outside the solar system. This is an incredibly important discovery, helping to confirm our understanding of how we think planetary systems form and evolve.

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The Interstellar Asteroid
NASA
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Jesse Rogerson, PhD

Jesse is a passionate scientist, educator, and science communicator. As an assistant professor at York University in the Department of Science, Technology, and Society, he teaches three classes: History of Astronomy, Introduction to Astronomy, and Exploring the Solar System. He frequently collaborates with the Canada Aviation and Space Museum, and lends his expert voice to the Ingenium Channel. Jesse is an astrophysicist, and his research explores how super massive black holes evolve through time. Whether in the classroom, through social media, or on TV, he encourages conversations about how science and society intersect, and why science is relevant in our daily lives.