軍武

〔即時新聞／綜合報導〕武漢肺炎（新型冠狀病毒病，COVID-19）疫情持續在歐洲延燒，不少國家皆陸續實施封城，防堵病毒傳播。其中義大利也在本月初實施二度封城，對民眾下達「禁足令」。對此，一名天真的5歲男童日前寫信給總理孔蒂（Giuseppe Conte），表示耶誕節將近，希望孔蒂能夠頒發「特別通行證」給耶誕老人，送禮物給全世界的小孩。

義大利總理孔蒂（Giuseppe Conte）本月4日即宣布從6日開始將實施3月全國封鎖以來最嚴厲的防疫措施，對西北部的倫巴底大區（Lombardy）等地實施封城，居民僅被允許出於工作、健康原因或緊急情況離開家中。
據外媒報導，孔蒂13日在推特上分享一名來自倫巴底的5歲男童湯瑪索（Tommaso）寫給他的信。現在時序已進11月中旬，耶誕節將至，湯瑪索擔心封城後，耶誕老人便不能隨意進出，也不能給世界上其他小孩「送幸福」，於是決定寫信給孔蒂，希望他能幫忙。

湯瑪索在信中表示，希望孔蒂能夠頒發疫情期間的「特別通行證」給耶誕老人，還可愛地替耶誕老人掛保證，「雖然耶誕老人很老了，進出屋子也很危險，但他會戴好口罩保護自己。我向您保證，除了罐頭和餅乾之外，我還會將消毒液放在耶誕樹下。祝您工作順利，也希望您可以為他開個特例。」

孔蒂特別發文回應湯瑪索，表示今年是義大利非常艱困的一年，但很開心湯瑪索及其家人朋友都有很好的防疫觀念。還安慰湯瑪索稱耶誕老人早就有國際旅行許可證，可以搭飛機到各地送禮物給其他小朋友。其親切回應獲得廣大網友稱讚，直言讓人覺得暖心。

"你不能改变物理定律，舰长。"

https://www.cbc.ca/radio/quirks/blog/santa-could-warp-space-to-make-deliveries-in-time-1.4459090

Santa could warp space to make deliveries in time

2017/12/21

Travelling from the North Pole all around the world in one night means that the reindeer must accelerate Santa, his sleigh and all the presents up to roughly 10 million kilometres per hour, or .97 per cent of the speed of light.
At that speed, air friction from the un-aerodynamic shape of the reindeer, with their antlers and legs sticking out, plus the odd-shaped presents stacked on top of the sleigh, would produce ultra-high temperatures that would incinerate Santa and his entire transport system in a matter of seconds.

A number of other problems with the laws of physics emerge when tackling this distance versus time issue, such as the tremendous G-forces on Santa's body every time he decelerates from near light speed to a stop on a rooftop, then accelerate back up to speed again.
It is a task, by the way, that he would have to repeat millions of times in one night.

https://www.nasa.gov/feature/jpl/nasa-contacts-voyager-2-using-upgraded-deep-space-network-dish/

NASA Contacts Voyager 2 Using Upgraded Deep Space Network Dish

2020/11/03

The call to Voyager 2 was a test of new hardware recently installed on Deep Space Station 43, the only dish in the world that can send commands to Voyager 2.
Located in Canberra, Australia, it is part of NASA's Deep Space Network (DSN), a collection of radio antennas around the world used primarily to communicate with spacecraft operating beyond the Moon.
Since the dish went offline, mission operators have been able to receive health updates and science data from Voyager 2, but they haven't been able to send commands to the far-flung probe, which has traveled billions of miles from Earth since its 1977 launch.