美国大幅削减NASA科学经费 天体物理学将遭重创
特朗普提交的预算提案初稿计划将NASA科学预算削减近一半，从73亿美元降至39亿美元，其中天体物理学预算从15亿美元减至4.87亿美元，行星科学预算从27亿美元降至19亿美元。这一削减将对众多正在进行和未来的任务造成严重影响，并使NASA面临更大挑战，此前NASA已裁掉10%的员工。
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据悉NASA科学经费将被削减近半 格隆汇
美国大幅削减NASA科学经费 天体物理学将遭重创 快科技
格隆汇4月11日｜据华盛顿邮报，NASA的科学预算可能会减少近一半。 格隆汇
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Some messages aren’t supposed to last forever. There are some Telegram groups and conversations where it’s best if messages are automatically deleted in a day or a week. Here’s how to auto-delete messages in any Telegram chat. You can enable the auto-delete feature on a per-chat basis. It works for both one-on-one conversations and group chats. Previously, you needed to use the Secret Chat feature to automatically delete messages after a set time. At the time of writing, you can choose to automatically delete messages after a day or a week. Telegram starts the timer once they are sent, not after they are read. This won’t affect the messages that were sent before enabling the feature.
A Telegram spokesman declined to comment on the bond issue or the amount of the debt the company has due. The spokesman said Telegram’s equipment and bandwidth costs are growing because it has consistently posted more than 40% year-to-year growth in users.
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