Scientists have developed a new technique that could help them understand "polka dot" stars using the transits of exoplanets.

June 5 and 6 will be the last opportunity this century to see the planet Venus as a little black dot moving across the solar disc -- a rare event with a long, important history in astronomy.

Sunday's annular solar eclipse may be history, but skywatchers have another spectacular celestial event to look forward to — the June 5 transit of Venus.

Sunday's "ring of fire" solar eclipse may be history, but skywatchers have another stunning event to look forward to — next month's historic Venus transit of the sun.

The Solar Dynamics Observatory saw a lunar transit and an Earth eclipse on July 25 — the first when the moon passed between ...

A group of scientists from Hawaii, Brazil, and California has measured the diameter of the Sun with unprecedented accuracy by using a spacecraft to time the transits of the planet Mercury across ...

Mercury Transits Yield Precise Solar RadiusA group of scientists from Hawaii, Brazil and California has measured the diameter of the Sun with unprecedented accuracy by using a spacecraft to time ...

An astrophotographer has captured an extremely rare and "difficult" photo of a solar flare exploding from the sun at the exact moment the International Space Station passed directly in front of ...

The final solar eclipse of 2025, occurring on September 21st, holds significant cultural and scientific importance. While not ...

Transits occur whenever one object in space appears to pass in front of a more distant object. Solar eclipses, for example, are transits of the moon in front of the sun.