作者: Samuel Chan

冰岛上空的凤凰极光

绿色的极光填满了繁星密布的天空。前景是一座山和一个湖。对某些人来说,极光可能像一只飞翔或升起的凤凰。有关更多详细信息,请参阅说明。

霍格天体: 近乎完美的环状星系

2024年2月18日 Hoag’s Object: A Nearly Perfect Ring Galaxy Image Credit: NASA, ESA, Hubble; Processing: Benoit Blanco Explanation: Is this one galaxy or two? This question came to light in 1950 when astronomer Arthur Hoag chanced upon this unusual extragalactic object. On the outside is a ring dominated by bright blue stars, while near the center lies a ba...