A GIANT cosmic tsunami could swallow Earth in a matter of seconds, space experts have revealed.
The group of scientists said they discovered the vast wave of hot gas in the nearby Perseus galaxy cluster.
And stretching across 200,000 light years, the wave is estimated to be around twice the size of our Milky Way galaxy.
It means the space phenomenon could devour Planet Earth, which is barely a fraction of the size of it.
The incredible discovery was revealed in a study published in the journal Monthly Notices of the Royal Astronomical Society.
Experts believe the wave formed billions of years ago after a small galaxy cluster grazed Perseus and triggered it to release its masses of gas which then started sloshing about.
Stephen Walker, the lead scientist at NASA’s Goddard Space Flight Centre, said: “Perseus is one of the most massive nearby clusters and the brightest one in X-rays, so Chandra (X-ray observatory) data provide us with unparalleled detail.
“The wave we’ve identified is associated with the flyby of a smaller cluster, which shows that the merger activity that produced these giant structures is still ongoing.”