1+ day, 4+ hour ago   (378+ words) The small moons inside Neptune’s rings may be the surviving debris of a much larger moon system destroyed when Triton was captured billions of years ago. Neptune’s smallest moons look like minor members of the solar system. They are difficult…...

4+ day, 1+ hour ago   (1203+ words) Twenty-seven faint objects beyond Neptune are giving astronomers a rare look at the planet-building material that survived when the outer solar system stopped growing. The outer solar system is not empty. Beyond Neptune, in the cold region known as the…...

5+ day, 5+ hour ago   (493+ words) Twenty-seven faint objects beyond Neptune have emerged from a deep James Webb Space Telescope survey, extending the search for the solar system’s building blocks to worlds only kilometres across. Hubble observations of part of the sample add a second clue:…...

6+ day, 7+ hour ago   (559+ words) In empty space, light travels at exactly 299,792,458 meters per second. That is about 300,000 kilometers per second, or 186,282 miles per second. It is the fastest speed at which matter, energy, or information can travel through the universe. The number is so…...

1+ week, 4+ day ago   (268+ words) Einstein’s theory of general relativity has survived another demanding test. Researchers used clouds of ultracold atoms aboard China’s space station to compare how two forms of rubidium respond to gravity, and found no measurable difference between them. Before your next…...

1+ week, 5+ day ago   (461+ words) A telescope is often described as a device that makes distant objects look closer. That is true, but it leaves out the part that matters most to astronomers. The main purpose of a telescope is to collect light—sometimes light…...

2+ week, 1+ day ago   (754+ words) The explosion is not simply a large firework at the surface. In a massive star, the core has been building heavier elements through nuclear fusion. When the core reaches iron, fusion can no longer provide the energy needed to support…...

2+ week, 2+ day ago   (266+ words) Before your next upload Clean image metadata before you share. Remove EXIF, GPS and common AI metadata before you share. Your file stays in your browser. Free · no account Carbon dioxide is also unevenly distributed. Solid CO2 is enhanced around the…...

3+ week, 5+ day ago   (754+ words) NASA’s Curiosity rover has reached a stretch of Mars that looks almost manufactured. Across the floor of a valley called Valle Grande, the ground is broken into a broad field of honeycomb-like polygons. From a distance they resemble paving stones....