Fireballs in the Desert, Brighter Than Oppenheimer’s Trinity

Consider the possibility that Elon Musk is not the most accomplished space entrepreneur in the Milky Way galaxy. In that case, 10-meter (30 feet) wide <a href="https://www.spacex.com/vehicles/starship/" rel="noopener ugc nofollow" target="_blank">Starship</a>-analogs might be floating through interstellar space. If any of them collided with Earth over the past billions of years, would we notice? Objects with a diameter of 10-meters impact Earth <a href="https://www.nature.com/articles/nature01238" rel="noopener ugc nofollow" target="_blank">every few years</a>. Such impacts release roughly the same amount of energy as the <a href="https://world-nuclear.org/information-library/safety-and-security/non-proliferation/hiroshima,-nagasaki,-and-subsequent-weapons-testin.aspx" rel="noopener ugc nofollow" target="_blank">atomic bombs</a> dropped on Hiroshima and Nagasaki during World War II, of order 20-kiloton of TNT — equivalent to 84 trillion joules. <a href="https://education.nationalgeographic.org/resource/ocean/" rel="noopener ugc nofollow" target="_blank">71%</a> of the Earth’s surface is covered by oceans and another 10% is covered by desert. This means that 8 out of 10 historic impacts are hidden under the veil of water or moving sand. <a href="https://avi-loeb.medium.com/fireballs-in-the-desert-brighter-than-oppenheimers-trinity-3186ad8f29a9">Visit Now</a>