Space threats might be more serious than we imagined. Dr. Natalie Starkey, a cosmochemist, shares a new concerning theory in her book titled \u201cCatching Stardust\u201d. She discusses the danger of asteroids and what would happen if one of them would hit one of Earth\u2019s oceans. \u201cIf we fail in the future to protect the planet from space threats, then we could expect a large asteroid or comet impact to wreak havoc on the Earth\u2019s surface, resulting in major global changed and high death tolls,\u201d explained Dr. Starkey. Affecting the entire planet Dr. Natalie Starkey theorized about such an event and its devastating effects. \u201cIt wouldn\u2019t just be humans that would be affected, of course, but many other Earth species, too. A comet or asteroid impacting one of Earth\u2019s oceans would result in huge tsunamis that could utterly devastate surrounding coastal regions,\u201d added Dr. Starkey. \u201cIt\u2019s anyone\u2019s guess how many millions of people would be directly or indirectly affected by a tsunami radiating out from an impact location in the middle of the Atlantic or the Pacific Ocean,\u201d the scientist added. Dr Starkey continued by describing the effects of a pebble thrown into a pond and the ripples that even reach the pond\u2019s edge. \u201cNow, let\u2019s imagine scaling up to a huge chunk of asteroid, possibly a few kilometres in diameter, traveling at unimaginable speeds \u2013 up to 40,000mph \u2013 into one of our oceans,\u201d she added. If space \u201cpebble\u201d would hit one of our oceans it would definitely wreak havoc on Earth. The scientist expects a huge tsunami radiating from the ocean. Since this is an unprecedented event it is hard to determine its exact effects. Nonetheless, Dr Starkey warns us that the collision could pose a threat to life on our planet.