2+ hour, 2+ min 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…...

7+ hour, 1+ min ago   (583+ words) The signal is extraordinarily small. The star may be thousands or millions of times brighter than the planet, and the atmosphere is only a narrow rim around a moving world. Astronomers observe repeated transits, calibrate the telescope and compare the…...

20+ hour, 2+ min ago   (743+ words) Comets are usually introduced through their tails, but a recent Subaru Telescope observation captured one without the cloud that gives a comet its familiar appearance. Comet 28P/Neujmin was more than 10 astronomical units from the Sun—farther out than Saturn—when…...

1+ day, 4+ hour ago   (699+ words) Planets are assembled inside broad disks of gas and dust around young stars, but those disks do not last forever. A new James Webb Space Telescope survey shows that winds from young, Sun-like stars can remove the gas while planets…...

2+ day, 22+ hour ago   (565+ words) Earth’s shadow will cover about 93 percent of the full Moon during the 27–28 August 2026 deep partial eclipse. It will be visible from the Americas, Europe, Africa, and western Asia. The full Moon will pass through Earth’s shadow on the night of…...

3+ day, 1+ hour ago   (717+ words) TIC 433545934 contains two pairs of stars locked in a wider orbit. The pairs eclipse internally, and observations also caught one binary crossing the other—a rare geometry that lets astronomers measure four stars together. Astronomers have identified a four-star system…...

3+ day, 7+ hour ago   (671+ words) The method begins with atoms. Hydrogen, oxygen, calcium and other elements absorb or emit light at particular wavelengths. Those lines are the same wherever the atoms are found. If a galaxy is moving, the lines arrive at slightly different positions…...

4+ day, 2+ hour ago   (656+ words) The Tarantula Nebula is one of the busiest stellar nurseries in our galactic neighbourhood. Thousands of young stars are packed into a web of gas and dust in the Large Magellanic Cloud, about 160,000 light-years away. Now three NASA space telescopes…...

4+ day, 7+ hour ago   (711+ words) They use a chain of methods rather than one universal measuring tape. Radar can reach planets. Parallax works for nearby stars. Farther out, astronomers compare known brightnesses, stellar pulsations and the stretching of light. Each step is checked against the…...

4+ day, 9+ hour ago   (405+ words) Boyajian’s Star may have a large companion orbiting it, according to a new study of the system’s motion. The best estimate puts the object at about 9.4 times the mass of Jupiter, but the uncertainty extends well into brown-dwarf territory. That…...