天文学家发现一颗可能的第二代行星围绕白矮星运转
使用NASA哈勃数据的天文学家在白矮星HS 0209+0832周围发现了第二代行星的证据，表明行星可以从其宿主星的残骸中形成。
为什么重要. 这一发现可能为行星形成以及恒星及其系统的演化提供新的见解。
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证据
- NNASA breaking news监管机构2026-10-07 00:09
Diligent sleuthing by astronomers uncovered a surprising chemical clue that indicates the white dwarf star HS 0209+0832 may host a second-generation planet. This artist’s concept released on Oct. 5, 2026, depicts that possible explanation.
- NNASA breaking news监管机构2026-10-07 00:09
The white dwarf is the “dead” core of a star that burned through all of its nuclear fuel and lost its outer envelope of gas and dust to space. The second-generation planet formed from that cast-off gas and dust, which is why its chemical content is very different from a planet that formed as its host star was forming.