The Moon reaches apogee, the farthest point from Earth in its orbit, at 5:46 A.M. EDT. At that time, our satellite will stand 251,996 miles (405,548 km) away. With the Moon sinking low in the hours ...

Asteroid 2 Pallas, at 10th magnitude, exhibited a stationary position at 7:00 A.M. EDT within the constellation Aquila. Pallas's location was approximately 6.5° southeast of Altair, Aquila's brightest ...

Temperature is a measure of the average energy of a collection of particles. (This is in contrast to kinetic energy, which is a measure of the energy carried by a single particle.) So, to answer a ...

The universe's expansion means its size is bigger than its age suggests. The universe's expansion doesn't have a speed limit like objects within it. Distant galaxies move away from us as space itself ...

At 10:58 AM on Sept. 28, 1969, residents of the small farming community of Murchison, Victoria, in Australia, heard a series of loud booms. The noise was accompanied by a strong smell and a streak of ...

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 ...

Look to Scorpius this evening, where the asteroid 4 Vesta floats near the globular cluster M80 close to the Scorpion’s claws. Viewing is best looking southwest starting around 30–60 minutes after ...

The word “corona” means “crown” — during the eclipse, it becomes visible, and streaming plasma leaving the Sun appears in amazing patterns. This outer atmosphere shines with a strange whitish light, ...

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 ...

JWST observations of Saturn's atmosphere revealed unprecedented details of its aurora and upper atmosphere, including previously unseen, complex structures. In the ionosphere (1100 km altitude), dark, ...

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 Messier (M) catalog, originating from Charles Messier's comet hunting in the 18th century, comprises 110 nonstellar objects initially identified to avoid confusion with comets. William Herschel's ...