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2024 年 4 月 16 日

船帆超新星遗迹的云气丝
影像提供: CTIO, NOIRLab, DOE, NSF, AURA; 影像处理: T. A. Rector (U. Alaska
Anchorage), M. Zamani & D. de Martin (’s NOIRLab)

说明:爆炸早已结束,但其影响仍在持续。大约1万1千年前,于人类信史开始之时,船帆座有一颗星发生爆炸,在天空中形成一个短暂可见的奇异光点。这颗星的外层冲撞星际物质,所产生的震波至今依然可见。这幅主题影像,在可见光波段捕捉到部份的庞大震波和云气丝。当气体从爆炸的恒星喷飞时,它会发生衰变并和星际物质发生反应,产生各种颜色和能量波段的光。船帆超新星遗迹的中心,则有颗孑遗下来的、密度和核物质相近的脉冲星,而其自转高达每秒10次以上。



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2024 年 4 月 16 日

船帆超新星遗迹的云气丝
影像提供: CTIO, NOIRLab, DOE, NSF, AURA; 影像处理: T. A. Rector (U. Alaska
Anchorage), M. Zamani & D. de Martin (’s NOIRLab)

说明:爆炸早已结束,但其影响仍在持续。大约1万1千年前,于人类信史开始之时,船帆座有一颗星发生爆炸,在天空中形成一个短暂可见的奇异光点。这颗星的外层冲撞星际物质,所产生的震波至今依然可见。这幅主题影像,在可见光波段捕捉到部份的庞大震波和云气丝。当气体从爆炸的恒星喷飞时,它会发生衰变并和星际物质发生反应,产生各种颜色和能量波段的光。船帆超新星遗迹的中心,则有颗孑遗下来的、密度和核物质相近的脉冲星,而其自转高达每秒10次以上。

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NASA每日天文图片 APOD Telegram | DID YOU KNOW?

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A project of our size needs at least a few hundred million dollars per year to keep going,” Mr. Durov wrote in his public channel on Telegram late last year. “While doing that, we will remain independent and stay true to our values, redefining how a tech company should operate.

Should You Buy Bitcoin?

In general, many financial experts support their clients’ desire to buy cryptocurrency, but they don’t recommend it unless clients express interest. “The biggest concern for us is if someone wants to invest in crypto and the investment they choose doesn’t do well, and then all of a sudden they can’t send their kids to college,” says Ian Harvey, a certified financial planner (CFP) in New York City. “Then it wasn’t worth the risk.” The speculative nature of cryptocurrency leads some planners to recommend it for clients’ “side” investments. “Some call it a Vegas account,” says Scott Hammel, a CFP in Dallas. “Let’s keep this away from our real long-term perspective, make sure it doesn’t become too large a portion of your portfolio.” In a very real sense, Bitcoin is like a single stock, and advisors wouldn’t recommend putting a sizable part of your portfolio into any one company. At most, planners suggest putting no more than 1% to 10% into Bitcoin if you’re passionate about it. “If it was one stock, you would never allocate any significant portion of your portfolio to it,” Hammel says.

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