疏散星团M35与NGC 2158
See Explanation. Clicking on the picture will download the highest resolution version available.
请参阅说明。单击图片将下载可用的最高分辨率版本。
M41: 小蜂巢星团
A starscape is shown with red filaments running diagonally from the lower left to the upper right. Many bright blue stars are visible across the center of the frame. Please see the explanation for more detailed information.
画面中呈现星空景象，红色的丝状结构从左下角延伸至右上角。画面中央分布着许多明亮的蓝色恒星。有关更多详细信息，请参阅说明。
昴宿星团：有七姐妹称号的星团
A star field shows many bright blue stars as well as bright blue reflecting gas. Please see the explanation for more detailed information.
星空呈现出许多明亮的蓝色恒星以及明亮的蓝色反射气体。有关更多详细信息，请参阅说明。
NGC 602: 牡蛎星团
A star cluster is shown in and around a gas cloud that looks like an oyster. The rollover image shows the same cluster not only in visible light, but X-ray and infrared too. Please see the explanation for more detailed information.
图中展示了一个位于气体云中的星团，其形状看起来像一只牡蛎。翻转图像不仅在可见光，而且在X射线和红外线中也显示出相同的星团。有关更多详细信息，请参阅说明。
NGC 1893与IC 410的蝌蚪
2024年2月2日 NGC 1893 and the Tadpoles of IC 410 Image Credit & Copyright: Sander de Jong Explanation: This cosmic view shows off an otherwise faint emission nebula IC 410, captured under clear Netherlands skies with telescope and narrowband filters. Above and right of center you can spot two remarkable inhabitants of the interstellar pond of gas and dust, known as the tadpoles of IC 410. Partly obscured by foreground dust, the nebula itself surrounds NGC 1893, a young galactic cluster of stars. Formed in the interstellar cloud a mere 4 million years ago, the intensely hot, bright cluster stars energize the glowing gas. Globules composed of denser cooler gas and dust, the tadpoles are around 10 light-years long and are likely sites of ongoing star…
英仙双星团
2023年7月7日 The Double Cluster in Perseus Image Credit & Copyright: Mårten Frosth Explanation: This pretty starfield spans about three full moons (1.5 degrees) across the heroic northern constellation of Perseus. It holds the famous pair of open star clusters, h and Chi Persei. Also cataloged as NGC 869 (top) and NGC 884, both clusters are about 7,000 light-years away and contain stars much younger and hotter than the Sun. Separated by only a few hundred light-years, the clusters are both 13 million years young based on the ages of their individual stars, evidence that they were likely a product of the same star-forming region. Always a rewarding sight in binoculars, the Double Cluster is even visible to the unaided eye from dark locations. Tomorrow’s picture:…
M44: 鬼宿星团
2022年4月30日 M44: The Beehive Cluster Image Credit & Copyright: Drew Evans Explanation: A mere 600 light-years away, M44 is one of the closest star clusters to our solar system. Also known as the Praesepe or the Beehive cluster its stars are young though, about 600 million years old compared to our Sun’s 4.5 billion years. Based on similar ages and motion through space, M44 and the even closer Hyades star cluster in Taurus are thought to have been born together in the same large molecular cloud. An open cluster spanning some 15 light-years, M44 holds 1,000 stars or so and covers about 3 full moons (1.5 degrees) on the sky in the constellation Cancer. Visible to the unaided eye, M44 has been recognized since antiquity….
船尾座的三个星团
2022年2月18日 Three Clusters in Puppis Image Credit & Copyright: Dave Doctor Explanation: Galactic or open star clusters are young. The swarms of stars are born together near the plane of the Milky Way, but their numbers steadily dwindle as cluster members are ejected by galactic tides and gravitational interactions. Caught in this telescopic frame over three degrees across are three good examples of galactic star clusters, seen toward the southern sky’s nautical constellation Puppis. Below and left, M46 is some 5,500 light-years in the distance. Right of center M47 is only 1,600 light-years away and NGC 2423 (top) is about 2500 light-years distant. Around 300 million years young M46 contains a few hundred stars in a region about 30 light-years across. Sharp eyes can spot…