开云体育

Astronomy Picture of the Day

Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.

2025 May 5

Explanation: What’s causing those lines? Objects in the sky sometimes appear as lines across water — but why? If the water’s surface is smooth, then reflected objects would -- as spots. But if the is choppy, then there are many places where light from the object can reflect off the water and still come to you -- and so together form, typically, a line. The same effect is frequently seen for the just and just . about 10 days ago in , , images of the , (top), and (right, faint) were captured both directly and in line-reflected forms from the . The other bright object on the right with a water-reflected line is a on a rock to warn passing boats.

Authors & editors: () & ()
NASA Official: Amber Straughn .
, , ;
A service of: at / ,

&