space-astronomy

When people ask which star died this month, they are usually wondering how astronomers know a star has died and what recent events actually mean. A stellar death is not a single...

Venus is located in the sky only near the Sun, appearing as the Evening Star after sunset or the Morning Star before sunrise. It never strays far from the Sun along the ecliptic...

The Moon’s appearance changes in a predictable cycle driven by its orbit around Earth and the relative positions of the Moon, Earth, and Sun. These changes are called phases,...

The Perseid meteor shower is an annual celestial display produced by debris from Comet 109P/Swift–Tuttle. Each July and August, Earth passes through this stream of particles,...

The April full moon is commonly called the Pink Moon, marking the first full moon of spring in the Northern Hemisphere and the first full moon after the March equinox. It typica...

A solar or lunar eclipse is a predictable alignment among the Sun, Earth, and Moon. During a solar eclipse, the Moon passes between the Sun and Earth, casting its shadow on a na...

The Moon on October 6 is commonly a waxing crescent in the early evening sky, setting several hours after sunset in mid-latitudes. This profile explains the Moon’s phase, illu...

A new moon occurs when the Moon passes directly between the Earth and the Sun, with its sunlit hemisphere facing fully away from Earth. During this phase, the Moon rises and set...

A fireball night sky event is an especially bright meteor, typically defined as a meteor brighter than magnitude −4, roughly the brightness of Venus in daylight. These objects...

The question “what time is the eclipse tomorrow in the USA” is really about converting a single event time into local clock time for any location in the United States. An ec...