Aliens Mystery 'alien spacecraft' reaches Earth today — here's what to expect A mystery object has been hurtling through space towards Earth — and according to some experts it could reach us tomorrow Michael D. Carroll and Claudia Trotman 04:36 ET, 29 Oct 2025 View 3 Images A UFO could reach Earth today(stock image)(Image: Getty Images/Science Photo Library RF) A mysterious object has been rocketing through space towards Earth , and according to some experts, it could arrive as soon as today. The object, known as 3I/ATLAS, has been the subject of speculation for months . Initially thought to be a comet, the celestial body displayed slightly different characteristics and behaviors compared to others, leaving one scientist particularly puzzled. Harvard theoretical physicist Avi Loeb has been cautioning for months that the object could be an 'extraterrestrial artifact' on the verge of making first contact. In simpler terms, aliens might be heading our way today (October 29). Article continues below Despite receiving a fair share of criticism for his theories , recent developments show an intriguing change in the object. Images from the Hubble Space Telescope captured the "comet" with an unusual 'anti-tail' – a jet of particles streaming towards the Sun. Article continues below READ MORE: Netflix's Love Death + Robots volume 4 episodes ranked from He Can Creep to Can't Stop New high-resolution observations from the Nordic Optical Telescope in the Canary Islands confirm the anti-tail seen in July and August has disappeared. NASA asserts the object will merely pass us by without incident – but Loeb suspects it's up to something nefarious, reports the Daily Star . View 3 Images Alien invasion in the forest (stock image)(Image: Getty Images) Speaking to science communicator and author Mayim Bialik, Loeb advised: "If you want to take a vacation, take it before [October 29], because who knows what will happen?" Now that the time has come, there are several steps we can take to brace ourselves for a potential alien invasion from the mothership. Previously dubbed as an "advanced alien object", these visitors could be unlike anything we've ever encountered before. The exact landing spot of the spacecraft on Earth remains uncertain, but its impact would undoubtedly be global. While science still leaves many questions unanswered, some look to literature for their extraterrestrial survival guides. H.G. Wells, the author of War of the Worlds, suggested that our best defense might be to simply sneeze on the "invaders." View 3 Images Avi Loeb has been outspoken on the topic of UFOs (stock image)(Image: Getty Images/iStockphoto) He penned: "But there are no bacteria in Mars, and directly these invaders arrived, directly they drank and fed, our microscopic allies began to work their overthrow." However, Loeb reassured us not to fret too much, suggesting that aliens might not be after our resources – they could just be curious about us as a species. Given the "billions" of years it takes to traverse the universe, Loeb proposed that the aliens are "far more sophisticated and ahead of us humans." He went on to say: "They are much more sophisticated they wouldn't care much about us and it's actually an opportunity for us to learn about the future technologies that they posses. It would take us a long time to develop ourselves so for us it will be a learning experience." Article continues below As for the perils of an invasion, Loeb advises not to worry. He concluded: "I see it in a very positive way." Follow The Mirror US: Source: https://www.themirror.com/news/weird-news/alien-spacecraft-arrives-earth-scientists-1472951