The first 500 people to click on the link in the description

前500名點擊描述中的鏈接的人。

Will get their first 2 months completely for free

將得到他們的前2個月完全免費

So a few years ago

所以幾年前

Back in 2009

早在2009年

Steven Hawking decided to throw a party

史蒂文-霍金決定開個派對

Near the Univeristy of Cambridge in the UK.

靠近英國劍橋大學。

The party happened on the 28th of June

派對發生在6月28日

But the catch was that Hawking only sent out invitations

但問題是，霍金只發邀請函。

To the party AFTER the party had already taken place

派對已經舉行之後再向派對提出申請

You see, this was a party for time travellers

你看，這是一個時間旅行者的聚會。

And by only sending out invitations after the party had already taken place,

而且是在聚會已經舉行之後才發出邀請。

The theory was that only people capable of time travel would know about it and show up.

理論上，只有能夠進行時間旅行的人才會知道並出現。

Unfortunately for Hawking, nobody ended up showing up to the party.

不幸的是，霍金最終沒有人出現在聚會上。

At least to our knowledge

至少據我們所知

He partied alone that day, but to any potential time travelers that are watching this video,

那天他獨自一人狂歡，但對於任何潛在的時間旅行者來說，正在觀看這段視頻。

You can change that by going to these coordinates on June 28th, 2009 and pay him a visit.

你可以在2009年6月28日到這些座標去改變這種狀況，去拜訪他。

Hawking believed that his invitations to this party would last for thousands of years.

霍金相信，他的這個聚會的邀請函會持續數千年。

And hopefully encourage somebody in the far future to come back and visit

並希望鼓勵某人在遙遠的將來再來訪問。

But this automatically made a question

但是，這就自動提出了一個問題

Is traveling to the past even possible in the first place

旅行到過去是否有可能呢？