theSIGNAL SCIENCE
1 June 2026
"The universe is not only stranger than we imagine; it is stranger than we can imagine."
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Science

The Galaxy Bar That Should Not Exist

A cosmic structure found in one of the universe's earliest galaxies is rewriting what astronomers thought they knew about how galaxies grow.

One and a half billion years after the Big Bang, a galaxy called GN20 was already doing something it had no business doing. It was building a bar — a rigid, rotating bridge of stars slicing straight through its centre — at a time when the universe was young, chaotic, and, according to theory, completely inhospitable to such orderly structures. Astronomers led by Leindert A. Boogaard of Leiden University have now confirmed this impossible-looking feature using the James Webb Space Telescope, and the finding is causing some serious head-scratching.

Stellar bars are not exotic curiosities. Even our own Milky Way has one. They act like cosmic funnels, channelling gas inward toward a galaxy's nucleus, fuelling ferocious star formation and feeding the central black hole. In the nearby universe, they are everywhere.

But building one was thought to require billions of years of slow, quiet evolution — the kind of patience the early universe simply did not have.

JWST's infrared vision pierces GN20's dust, revealing a 7-kiloparsec stellar bar hidden inside one of the universe's earliest massive galaxies.
Discuss
  • What does it mean for a scientific theory when real observations contradict its predictions?
  • Why might astronomers have assumed that early, gas-rich galaxies could not form stellar bars?
  • GN20 was hidden by dust for decades — how much might the universe be hiding from us still?
  • Should scientists update a model after one surprising finding, or wait for more evidence? Why?
  • If the Milky Way also has a stellar bar, what does GN20's discovery tell us about our own galaxy's past?
Science

Moon dream shaken by Florida fireball

At exactly 9pm on Florida's Space Coast, a New Glenn rocket exploded during a routine test, turning the sky above Kennedy Space Center a vivid, unsettling orange — visible from 185 kilometres away. The rocket belongs to Jeff Bezos's Blue Origin, which had just won a NASA contract to carry landers to the Moon. …
  • Should governments rely on private companies like Blue Origin for critical space missions?
∞
This detection is remarkable because, according to the theories, it technically should not exist.
Leindert A. Boogaard, Astronomer, Leiden University
Science

She hired Carnegie Hall for her birthday

On a Friday evening in late April, Cathy Tie played Saint-Saëns at Carnegie Hall — a venue she had personally hired for her own 30th birthday party. Most guests had barely met her. That detail tells you almost everything. Tie is a Canadian biotech entrepreneur who, since January 2025, has launched three companies and lived in three cities. …
  • Should private entrepreneurs be allowed to fund human gene-editing research independently?
AMERICAS · Science
‘There is no way to stop this’: ‘Biotech Barbie’ Cathy Tie on her mission to genetically modify babies
GLOBAL · Science
JWST finds a stellar bar in the early universe that breaks all rules
WORLD · Science
They call it stupid hot for a reason: Heat muddles animal brains
AFRICA · Science
Unearthing Namibia’s forgotten genocide through forensic archaeology
theSIGNAL IN THE LAB
1VOCABULARY
head-scratchingchannelling
shroudkiloparsecssuppress
ferociouslaunchpad
2GRAMMAR FOCUS
Inversion with negative adverbials
When a sentence begins with a negative or restrictive adverbial (e.g. Not only, Hardly, Never, No sooner), the subject and auxiliary verb are inverted, as in a question. This structure adds emphasis and is common in formal or dramatic writing.
did · had · was · Not only · Hardly · Never · No sooner
  1. Not only GN20 form a stellar bar, but it did so billions of years earlier than theory predicted.
  2. had astronomers confirmed the bar using JWST when NOEMA added a third independent line of evidence.
  3. Never the standard models predicted that a bar structure could survive in such a gas-rich early galaxy.
  4. Not only the New Glenn rocket destroyed during testing, but the launchpad itself was completely wrecked.
  5. Hardly the Blue Origin contract been announced when the explosion cast serious doubt on NASA's lunar programme.
  6. No sooner the fireball appeared in the sky than it was visible from 185 kilometres away along Florida's Space Coast.
  7. Not only Cathy Tie hire Carnegie Hall for her birthday, but she also launched three companies in the same year.
3PHRASAL VERBS
Match the phrasal verb to its definition. All six appear in today's articles.
  1. cut through
  2. build up
  3. feed into
  4. turn out
  5. break down
  6. carry out
4CRITICAL THINKING
GN20 challenges existing models of how galaxies evolve, yet scientists describe the finding as 'thrilling' rather than troubling. What does this reaction suggest about the role of anomalies in scientific progress? Consider also whether Cathy Tie's approach to gene editing — doing it 'openly, with regulatory approval' — changes the ethical calculation compared to her ex-husband's work, or whether the goal itself remains controversial regardless of method.
5CREATIVE · HEADLINES
Write a headline for the top story in each of the following styles. One line each, no explanation:
  • TABLOID NEWSPAPER
  • LUXURY MAGAZINE
  • ACTIVIST BLOG
6WRITING
Scientists say GN20 'should not exist,' yet there it is — a fully formed structure in a universe too young to have produced it. Using evidence from the article, write a short paragraph explaining why this discovery matters beyond astronomy, and what it suggests about the limits of human knowledge.
7DEGREES OF EXTREMITY
Complete each ladder from mild to strong. Fill in the missing word(s) from the articles.
  • puzzling→→
  • interested→→
  • active→→
  • uncertain→→
  • wealthy→→
  • unconventional→→
  • difficult→→
8SPEAKING
  1. Should scientists prioritise deep space discovery over Moon exploration?
  2. Does extreme wealth make ambitious dreams more or less meaningful?
  3. Can gene editing ever be truly ethical? Where is the line?
  4. Which discovery from the articles do you find most unsettling and why?
  5. Is breaking scientific rules always a sign of progress?