An interstellar trespasser known as 3I/ATLAS is almost certainly a comet. So, why do so many people think it's ...

If you’ve ever played peekaboo with your little one, you’ve helped them work on object permanence. Your baby is learning that people and objects exist even when they can’t see or hear them. Object ...

U.S. fighter jets have shot down four high-altitude objects this month — including the first instance in which the North American Aerospace Defense Command "has taken kinetic action against an ...

An unidentified object was shot down 10 miles off the frozen coast of Alaska on Friday afternoon, US officials announced, but details about the object are scarce. US military pilots sent up to examine ...

The U.S. and Canada are investigating three unidentified flying objects shot down over North America in the past three days. Militaries have adjusted radars to try to spot more incursions. By Julian E ...

A high-altitude object was shot down near Lake Huron on Sunday afternoon, marking the fourth time in just over a week that the US military has taken down objects in North American airspace. There’s no ...

What is the biggest object in the universe? Learn more about the biggest objects in the universe, including galaxies, galaxy clusters, and dark matter. The biggest objects in the universe are clusters ...

Moving any object at or near the speed of light is currently impossible. "As you get closer to the speed of light, the energy you need grows by a lot," Hornof said. We cannot generate enough energy to ...

A new book, “How to Live With Objects,” from the founders of the design website Sight Unseen explores the topic. By Aileen Kwun “You can only afford so much sofa,” Monica Khemsurov said, speaking of ...