+
Sign up for
The Upworthiest
Our top stories of the day delivered straight to your inbox.
upworthy
Heroes

In 1437, Korean scientists watched a star go nova. Modern scientists finally found it.

As any historian of medieval East Asia or player of Civilization V: Brave New World will tell you, 15th century Koreans were really, really, really good at science.

[rebelmouse-image 19475372 dam="1" original_size="700x467" caption="A statue of King Sejong the Great in Seoul. Thanks, guy! Photo by Republic of Korea/Flickr." expand=1]A statue of King Sejong the Great in Seoul. Thanks, guy! Photo by Republic of Korea/Flickr.

Under the judicious rule of Sejong the Great, the kingdom's top researchers spent a lot of time looking at space and making maps of it.

In 1437, during one of these looking sessions, a bunch of scientists thought they discovered a bright new star, one that easily outshone everything else in the sky (eat it, Luyten 726-8A).

14 days later, it disappeared.

Unbeknownst to the ancient sky-watchers, the "new star" was not new at all. It was, instead, what's known as a "classical nova" — an ultra-dense, white dwarf star that sucks so much matter off a neighboring star it causes a giant, nuclear explosion. The star gets super bright for a short period of time before once again fading into the cosmic background — like a stellar version of Pokémon GO.

The problem is, 15th century Korean scientists didn't exactly keep the best records. For starters, it was the 15th century, and pretty much everyone had rickets. Also, the modern Korean alphabet wouldn't be invented for another seven years.

You'll be shocked to learn the location of the star that went nova was lost to time.

Until now.

After 580 years of searching, a team of researchers from four continents has finally located the star, making it the oldest such nova to have its location accurately documented.

Lead researcher Michael Shara had spent nearly 30 years looking for remnants of the stellar explosion, known as Nova Scorpii. (A great name for any Dutch speed metal band that might be looking, btw. Don't sleep on it!)  

Shara told The Atlantic's Marina Kornen that attempting to locate the site had been like "searching for a needle in a billion haystacks." Initially, the American Museum of Natural History curator and his team believed they'd find the nova between two stars in the constellation Scorpio. With the aid of online astronomical catalogs, which weren't a thing the first time Shara looked back in the 1980s, the astronomers combed through records of hundreds of millions of stars until, eventually, they focused in on a planetary nebula near the original search area.

In a classic "That's no moon, it's a space station" moment, the team rapidly realized that the nebula was the nova — or at least the remnants of it. They had been looking between the wrong two stars the entire time.

The team published its findings in the August edition of Nature.

"When we relaxed our criteria as to where to look in the constellation, we found the nova in 90 minutes," Shara told Space.com.

Image by K. Ilkiewicz and J. Mikolajewska.

This 2016 image, taken by a telescope in Chile, shows the star — indicated by two long, red hashmarks — surrounded by the cloud of hydrogen it ejected in 1437. The smaller red "plus sign" in the center shows the star's location at the time it went nova almost six centuries ago.

Thanks to research by Shara and others, we know a lot more about novas than we did in 1437 — and even more now that Nova Scorpii has been tracked down.

In addition to classical novas, astronomers have observed frequent "dwarf novas" — much smaller explosions — across the visible universe. Shara has long suspected that both types of novae arise from the same star systems at different points in time rather than from different systems altogether.

Images from the 1930s and '40s, published in the paper, show the star pair that produced the 1437 nova undergoing a series of dwarf novae — lending Shara's theory some weighty backup.

Whether you specifically care about the dynamics of matter exchange in binary star systems of not, it's hard to deny that — holy crap — this is amazing.

[rebelmouse-image 19475374 dam="1" original_size="700x364" caption="Image by tyrogthegatekeeper/Wikimedia Commons." expand=1]Image by tyrogthegatekeeper/Wikimedia Commons.

When those 15th century Korean astronomers looked at the sky, they knew they were witnessing something important about their universe.

With the right tools, some tenacity, and a bit of luck, human beings have made it possible to find out what that is. Even after a 600-year search.

Science, then, as now, totally rules.

Community

Facebook group brings people together IRL to make meaningful friendships

True

Making new friends as an adult is challenging. While people crave meaningful IRL connections, it can be hard to know where to find them. But thanks to one Facebook Group, meeting your new best friends is easier than ever.

Founded in 2018, NYC Brunch Squad brings together hundreds of people who come as strangers and leave as friends through its in-person events.

“Witnessing the transformative impact our community has on the lives of our members is truly remarkable. We provide the essential support and connections needed to thrive amid the city's chaos,” shares Liza Rubin, the group’s founder.

Despite its name, the group doesn’t just do brunch. They also have book clubs, seasonal parties, and picnics, among other activities.

NYC Brunch Squad curates up to 10 monthly events tailored to the specific interests of its members. Liza handles all the details, taking into account different budgets and event sizes – all people have to do is show up.

“We have members who met at our events and became friends and went on to embark on international journeys to celebrate birthdays together. We have had members get married with bridesmaids by their sides who were women they first connected with at our events. We’ve had members decide to live together and become roommates,” Liza says.

Members also bond over their passion for giving back to their community. The group has hosted many impact-driven events, including a “Picnic with Purpose” to create self-care packages for homeless shelters and recently participated in the #SquadSpreadsJoy challenge. Each day, the 100 members participating receive random acts of kindness to complete. They can also share their stories on the group page to earn extra points. The member with the most points at the end wins a free seat at the group's Friendsgiving event.

Keep ReadingShow less
friendship
Democracy

This Map Reveals The True Value Of $100 In Each State

Your purchasing power can swing by 30% from state to state.

Image by Tax Foundation.

Map represents the value of 100 dollars.

As the cost of living in large cities continues to rise, more and more people are realizing that the value of a dollar in the United States is a very relative concept. For decades, cost of living indices have sought to address and benchmark the inconsistencies in what money will buy, but they are often so specific as to prevent a holistic picture or the ability to "browse" the data based on geographic location.

The Tax Foundation addressed many of these shortcomings using the most recent (2015) Bureau of Economic Analysis data to provide a familiar map of the United States overlaid with the relative value of what $100 is "worth" in each state. Granted, going state-by-state still introduces a fair amount of "smoothing" into the process — $100 will go farther in Los Angeles than in Fresno, for instance — but it does provide insight into where the value lies.

Keep ReadingShow less
money
Identity

One man turned nursing home design on its head when he created this stunning facility

"What if we design an environment that looks like outside?" he said. "What if I can have a sunrise and sunset inside the building?



92-year-old Norma had a strange and heartbreaking routine.

Every night around 5:30 p.m., she stood up and told the staff at her Ohio nursing home that she needed to leave. When they asked why, she said she needed to go home to take care of her mother. Her mom, of course, had long since passed away.

Behavior like Norma's is quite common for older folks suffering from Alzheimer's or other forms of dementia. Walter, another man in the same assisted living facility, demanded breakfast from the staff every night around 7:30.

Keep ReadingShow less
Family

Grandma got a secret DNA test after noticing her granddaughter didn't look like her siblings

People think she was right to do it, too.

via Christian Buehner/Unsplash and Warren Umoh/Unsplash

The grandmother was suspicious.

A grandmother always felt her middle granddaughter Lindsay, 15, looked slightly different from the rest of the family because she had blonde, curly hair, while the rest of her siblings’ hair was dark “I thought genetics was being weird and I love her,” she wrote on Reddit’s AITA forum.

But things became serious after Linday’s parents “banned” her from taking things a step further and getting a DNA test. If the family was sure their daughter was theirs, why would they forbid her from seeking clarity in the situation? After the parents laid down the law, the situation started to seem a little suspicious.

“I told my son and [daughter-in-law] that there was something fishy around her birth she needed to know. They denied it and told me to leave it alone,” the grandma wrote.

Keep ReadingShow less
dna tests
Joy

7 things Black people want their well-meaning white friends to know

"You, white friend, need to speak up and say something when I can't."

Silver Sprocket/YouTube

Growing up black in a white neighborhood.

I grew up black in a very white neighborhood in a very white city in a very white state.

As such, I am a lot of people's only black friend.

Keep ReadingShow less
Education

Warren Buffet's partner, Charlie Munger shared his most valuable advice on becoming a success

The billionaire passed away on November 28 at the age of 99.

via Nick / Wikimedia Commons

Charlie Munger of Berkshire Hathaway.

Charles Munger, Vice Chairman of Berkshire Hathaway and Warren Buffet’s closest business partner, passed away on Tuesday, November 28, at 99. Buffett and Munger's partnership lasted over 50 years, producing Berkshire Hathaway, one of the largest and most successful conglomerates in history.

When Munger passed, his estimated worth was $2.6 billion. Buffet, 93, is believed to be worth $119 billion.

But Munger was far more than just a wealthy man. Apple CEO Tim Cook called Munger a “keen observer of the world around him,” and he was known for his pithy bits of common-sense wisdom known as “Mungerisms.”

Keep ReadingShow less
wisdom
Health

If you're grieving a loved one this holiday season, here's a gift you can give yourself

After losing her almost-4-year-old daughter to epilepsy, Kelly Cervantes created a "grief companion" that meets people wherever they are in their grief journey.

Images courtesy of Kelly Cervantes

Kelly Cervantes wrote her way through grieving the loss of her daughter, Adelaide.

Kelly Cervantes begins the Introduction to her book with five words: "Grief sucks. It's also weird." It's a concise truth that anyone who has lost a loved one knows all too well.

Grief is a universal experience—none of us get through life without loss—but it's also unique to each person. Most of us are familiar with the popular "stages of grief" theory, but denial, anger, bargaining, depression, and acceptance (along with guilt and a host of things) are less like sequential rungs on a ladder and more like pools you fall into at various times as you stumble your way through the grief process. Grief is not linear and it's not neat and tidy and it's not predictable.

Take it from someone who's been there. Kelly Cervantes lost her daughter, Adelaide, to epilepsy just shy of her 4th birthday. Using writing as a therapeutic tool to help her process Adelaide's medically complex life, death and everything that came after, Kelly created the book she wished she'd had as she was trying to navigate her own grieving process.

Keep ReadingShow less
grief
Trending Stories