The 2025 summer solstice takes place on June 20, heralding the onset of astronomical summer and the longest day of the year.

When the moon travels between the sun and Earth, an eclipse takes place. The type depends on how the three moving objects line up. If it is not in a perfect line, a partial eclipse occurs.

The National Science Foundation’s Daniel K. Inouye telescope debuted a close-up of the sun captured by its new, ultra-powerful imaging tool. Here’s what you can see.

The object takes about 25,000 years to complete a single orbit of ... whose orbital distance ranges from 30 to 49 astronomical units as it travels an elliptical path around the sun. The researchers ...