Astronomy

Science & Technology

Retrograde Earth describes the apparent backward motion of Earth against the background stars as observed from an external reference frame, while commonly referring to how plane...

space

The Moon moves about 12° eastward against the stars each day, so which star lies closest to it tonight shifts every night and hour. Because of that motion and the subtle parall...

Astronomy

The planet you can see after sunset depends on the current positions of Earth and the other planets, the time of year, and your location. At any given night, one or two planets...

Astronomy

A new moon occurs when the Moon and Sun share the same ecliptic longitude, positioning the unlit hemisphere toward Earth. Because the Moon rises and sets close to the Sun, this...

Astronomy

Five planets aligned occurs when Mercury, Venus, Mars, Jupiter, and Saturn appear clustered within a small arc of sky, visible before dawn or after dusk depending on the arrange...

Space and Astronomy

Jupiter is a planet, so it does not shine its own light but reflects sunlight. Its nightly path across your sky depends on Earth’s rotation, your specific location on Earth, a...

Science

A new moon occurs when the Moon sits between Earth and the Sun, with its unilluminated side facing us. During this phase the Moon rises and sets roughly with the Sun, so it rema...

space-astronomy

The star closest to the Moon tonight is not fixed; it changes night by night as the Moon orbits Earth. On any given date, the nearest star is whichever celestial neighbor happen...

planets

To answer whether Venus is visible tonight , you need three things: the date and your location, the planet’s current position relative to the Sun, and local sky conditions inc...

Science & Technology

A total solar eclipse occurs when the Moon passes directly between the Sun and Earth, fully obscuring the solar disk for a few minutes along a narrow path. For viewers within th...