Astronomers use many methods to determine this number, including gravitational lensing, the universe’s expansion rate, and more.

Saturn reached opposition at 2 A.M. EDT, exhibiting high visibility throughout the night and presenting optimal viewing conditions for its rings and moons. Saturn's apparent magnitude was 0.6 in ...

On September 20th, beginning around 12:30 A.M. EDT, Titan, a moon of Saturn, will transit across the planet's disk, accompanied by its shadow. The transit will be visible telescopically, with Titan's ...

On a specified date, the Moon will pass 0.8° north of Venus and 1.3° north of Regulus (magnitude 1.4), with Venus and Regulus separated by less than 0.5°. This celestial trio will rise around 4:30 A.M ...

NGC 457, also known as the Owl Cluster, is readily observable with binoculars or telescopes in the evening sky. Located approximately 2.1° southwest of Delta Cassiopeiae, it is easily identified near ...

SpaceX's Starship Flight 9, though achieving orbit, failed due to a damaged pressurization system diffuser on the main fuel tank, leading to a chain of events including payload door failure and loss ...

The OSIRIS-REx spacecraft returned triumphantly to Earth in 2023 after collecting 4.3 ounces (121.6 grams) of precious grains of dust and rock from the asteroid Bennu in 2020. While that sample return ...

All the black holes that astronomers have seen fall into one of three categories: stellar-mass black holes, intermediate-mass black holes, and supermassive black holes. Each is more massive than our ...

Manual cardiopulmonary resuscitation (CPR) techniques, including the "handstand" method, are ineffective in microgravity due to the lack of a counter-force to compression, resulting in insufficient ...

Shocked quartz, indicative of extreme pressure and temperature, was discovered at three prominent Clovis culture archaeological sites (Murray Springs, Blackwater Draw, Arlington Canyon). The presence ...

What do you get for staring into the abyss of a black hole for year? Insights into the fundamental workings of gravity. In 2019, the Event Horizon Telescope (EHT) made headlines with a monumental ...

On September 5th, the constellation Camelopardalis, containing Kemble's Cascade and NGC 1502, will be visible in the northern sky after 11 PM local daylight time. Uranus will become stationary on ...