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 ...

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 ...

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 ...

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 ...

Blue Origin's NS-35 New Shepard mission, scheduled for Thursday, will conduct a dedicated research flight carrying over 40 payloads, including 24 student experiments from NASA's TechRise Student ...

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 ...

Alexander Friedmann (1888-1925), a Russian mathematician and meteorologist, made significant contributions to cosmology. Utilizing Einstein's general relativity, Friedmann's 1922 paper, "On the ...

Saturn's observation is optimal around 1 A.M. local daylight time, when it reaches its highest point (50° south) before morning twilight. Telescopic observation of Saturn reveals its ring system ...

The nuclear furnaces in the Sun and stars create blistering heat and blinding light. Magnetism, however, plays no role in the fusion process that converts their mass to energy. Thus, a major magnetic ...

Antimatter, particles with opposite charge to their matter counterparts, was theoretically predicted and later experimentally confirmed, existing naturally due to charge conservation in particle ...