Meaning of 陽に in Japanese

The Milky Way is a vast belt of distant stars, each star a sun like our one.

The earth is small in comparison with the sun.

Although most islands in the ocean have been mapped, the ocean floor is generally unknown.

The earth is small compared with the sun.

There's a little black spot on the sun today.

Patty exposed her back to the sun on the beach.

Don't expose your skin to the sun for too long.

Of course "Hayabusa" is not actually closing in on the Sun, it is just positioned as in the figure so that, seen from the Earth, it is on the opposite side of the Sun; this is called 'conjunction'.