It is with the deepest sadness that we learn of Prince Philip's death, aged 99.
The Palace today confirmed the news in a statement, writing: "It is with deep sorrow that Her Majesty The Queen announces the death of her beloved husband, His Royal Highness The Prince Philip, Duke of Edinburgh.
The statement continued: "His Royal Highness passed away peacefully this morning at Windsor Castle. Further announcements will be made in due course."
"The Royal Family join with people around the world in mourning his loss."
Now, as the heartbreaking announcement reaches ears across the world, many are left wondering: What happens when Prince Philip dies?
When Prince Philip passed away, Buckingham Palace pinned a physical announcement on their gates, they also released a formal statement with media, as well as announcing the news on their social media channels.
Eight days of official mourning will be observed by all staff at the palace, while the British Royal Family will be in mourning for two weeks and The Queen will be given up to a month to mourn her love.
Flags across the UK at major institutions and military establishments with a focus on naval flags given Prince Philip's ties with the Royal Navy would be flown at half-mast.
Like with the passing of Princess Diana, the Royal Standard flag at Buckingham Palace (you see it when the Queen is in residence) would not be lowered to half-mast.
However, during Diana's death there was such a public outcry over the flags that the Queen did break protocol and fly the Union Flag for the first time ever at half-mast from Buckingham palace.
Since Diana's death, the Union Flag flies at half-mast for members of the Royal Family who have passed away.
Prince Philip is entitled to a state funeral, however it is believed that is not the Duke's wishes.
In addition, given the current climate in the UK with COVID-19 causing widespread lockdown, there likely wouldn't be a large public service.
That would likely suit the Duke just fine - his aides say that the Queen's husband would prefer not to have the "fuss" of a lying-in-state or a full state funeral.
It's expected that instead of Westminster Abbey, Prince Philip's body will lie at St James's Palace (which is where Princess Diana lay for several days before her funeral).
The public would not be allowed to view the body.
In line with his no-fuss desires, Prince Philip will be laid to rest in Frogmore Gardens, in the grounds of Windsor Castle.
This means he might not be buried with his wife, as many of Britain's monarchs and consorts are laid to rest in Westminster Abbey and St George's Chapel.
However as both of The Queen's parents and younger sister are all buried at St George's Chapel, Windsor Castle, The Queen could break with tradition and be buried alongside her loved ones here.
In the case of the Duke dying before his wife, Queen Elizabeth is allowed an official mourning period of eight days.
All royal affairs will be put on hold during this time, out of respect for Her Majesty's loss.
The Queen will be allowed a further 30 days to mourn her life partner, before being expected to make a full return to public life and duties.