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💫 Exploring Our Universe with me 🪐

17/07/2025

By combining tens of thousands of frames, the mineral colors of primarily titanium and iron on its surface can be revealed.
📸 AJ SMADI

17/07/2025

NGC 4565 - The Needle Galaxy
Credit: Jaume Zapata

17/07/2025

Spending just one hour near a black hole might be the equivalent of thousands of years passing here on Earth.

This astonishing effect is called gravitational time dilation, a concept from Albert Einstein’s general relativity. Massive objects like black holes bend and stretch spacetime around them, making time flow at vastly different rates depending on how close you are.

16/07/2025

🌟 Stephenson 2-18 vs. the Sun: A Star Beyond Imagination

Get ready to rethink everything you thought you knew about scale.

On one side: our Sun, a powerful star about 1.4 million km wide. On the other: Stephenson 2-18, a red supergiant so massive it makes the Sun look like a glowing dot.

Discovered in the Stephenson 2 open cluster, this stellar giant is estimated to be over 2,000 times wider than the Sun. If placed at the center of our solar system, its outer edge would swallow Saturn's orbit. Even light would take over 8 hours to travel across its surface.

🧠 Why It Matters
Stephenson 2-18 pushes the boundaries of stellar physics. It forces scientists to reconsider how such massive stars evolve, and whether they explode as supernovae or collapse straight into black holes.

💥 Fun Fact
While our Sun burns hydrogen steadily for billions of years, Stephenson 2-18 is racing toward its explosive end, fusing heavier elements in a highly unstable phase. A cosmic finale is inevitable.

This comparison reveals just how extreme our universe can be — from small, steady stars to titanic celestial beasts like Stephenson 2-18.

15/07/2025

The clearest images of Jupiter ever captured.

NASA's latest visuals show the gas giant like never before swirling storms, vibrant colors, and raw cosmic power.

Pure art.

15/07/2025

Researchers just found out that we might be living inside a black hole that gave birth to our universe.

Some scientists now say the Big Bang wasn't the start of everything. Instead, it was a bounce inside a huge black hole in a parent universe.

According to Enrique Gaztanaga at Portsmouth, gravity crushed matter until quantum physics kicked in. That rebound, called the bounce, sent space growing again, from tiny to vast.

This idea even explains two big mysteries: how the universe expanded so fast early on and why it is speeding up now, without adding strange forces or weird particles.

In this model, our whole universe lies inside a black hole, and dark energy and cosmic inflation are natural results of that bounce.

It is a new way to think about where we came from. We are inside something bigger, a hidden cosmic cycle that may never end.

15/07/2025

At first glance, the night sky may seem like a simple scatter of stars but each dot can represent so much more.
When we gaze up with the naked eye, we mostly see stars from our own galaxy, the Milky Way. Each point of light is a burning sun, many with their own planets, moons, and possibly life. But with powerful telescopes, we peer far deeper and the story changes entirely.

In deep space images like the Hubble Ultra Deep Field, every dot isn’t just a star it’s an entire galaxy.
Each galaxy holds billions to trillions of stars, and each star may host its own planetary system. These tiny specks in the image are entire realms of light, motion, and mystery. The scale is staggering: our universe is home to over 2 trillion galaxies, stretching across 93 billion light-years of space.

And when scientists speak of every circle as a universe, they’re entering the realm of the multiverse.
Some theories in modern physics suggest that our universe may be just one of many like bubbles in a vast cosmic foam. Though still speculative, this idea challenges us to think bigger than ever before. What we once called "everything" might be just a small circle in a much grander reality.

15/07/2025

It only happened two to 13 billion light-years away 😬

15/07/2025

Largest Martian Meteorite Ever Found to Be Auctioned for $4 Million

On July 16, Sotheby’s New York will auction NWA 16788, a 24.5 kg (54 lb) Martian meteorite — the largest ever discovered on Earth. Valued at up to $4 million, this rare space rock could soon become a private collector’s prize or a museum's scientific gem.

Discovered in 2023 by an anonymous meteorite hunter in Niger’s Kefkaf region, NWA 16788 represents over 6% of all Martian material recovered on Earth. Scientists believe it was launched from Mars by a massive asteroid impact, traveling 140 million miles through space before crashing to Earth.

Classified as a shergottite, the meteorite shows evidence of intense pressure and heat:

- 20% of its minerals were transformed into glassy maskelynite
- It carries a fusion crust, formed as it burned through Earth’s atmosphere

While a fragment has been studied in China, the fate of the main rock remains uncertain. Many scientists hope it lands in a research institution, fearing it may instead vanish into a private collection.

This auction raises important questions: Should such extraordinary planetary relics be protected as scientific assets—or sold as collectibles?

14/07/2025

Quantum Experiment Reveals “Negative Time” — A New Twist on Reality

Physicists at the University of Toronto have made a discovery that could reshape how we understand time. Led by Daniela Angulo and doctoral student Josiah Sinclair, their two-year quantum experiment revealed signs of what they call “negative time.”

Using ultra-cold rubidium atoms and tracking photon interactions, researchers found that—under certain conditions—atoms appeared to respond to photons before they arrived. In quantum terms, a clock would seem to tick backward.

This counterintuitive result reflects the strange nature of quantum mechanics, where particles can interact in ways that defy classical cause-and-effect. The team, in collaboration with quantum theorist Howard Wiseman, linked this to how photons travel—either passing through atoms or being absorbed and re-emitted. In some cases, atoms seemed to be excited even when photons remained unchanged.

Rather than proving time travel, this supports advanced theories like retrocausality and the transactional interpretation, which suggest that information in the quantum realm might move both forward and backward through time.

Theoretical physicist Sabine Hossenfelder noted that this aligns with quantum equations, which often remain unchanged regardless of the direction of time.

Beyond theory, this breakthrough could benefit quantum computing by improving our understanding of photon–atom interactions — key to building faster, more reliable quantum systems.

As co-lead Aephraim Steinberg put it:
"We don't yet know where this leads — but we’re going to keep thinking about it."

14/07/2025

Galaxies Collide — But Stars Rarely Crash

When galaxies collide, it may sound like a violent event — but in reality, stars almost never collide. That’s because even in dense galaxies, stars are separated by trillions of kilometers, making direct collisions incredibly rare.

What really happens during these cosmic encounters?

- Galaxies become stretched, twisted, or reshaped

- Giant gas clouds collide, triggering intense star formation (called starbursts)

- Supermassive black holes at the centers may merge, releasing powerful gravitational waves

These processes unfold over hundreds of millions to billions of years. Instead of chaos, galactic collisions resemble a graceful transformation of structure and energy.

A real-life example? The Milky Way and Andromeda galaxies are expected to merge in about 4 billion years, forming one larger galaxy — likely elliptical in shape.

So while galactic collisions sound dramatic, they’re more of a slow cosmic ballet than a crash.

14/07/2025

🔭 12 Must-See Astronomy Events in 2025
Mark your calendars — the cosmos has a spectacular show in store! From rare planetary pairings to meteor showers and eclipses, here are the top celestial events to watch this year:

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📅 July 13 – Saturn Retrograde Begins
Saturn appears to move backward in the sky — a yearly illusion that’s fascinating to follow, especially for planetary motion lovers.

📅 July 17 – Mercury Retrograde
Mercury starts its notorious retrograde phase. While often blamed for miscommunication, it's also a chance for reflection and reset.

🌠 July 29 – Double Meteor Shower
The Southern Delta Aquariids and Alpha Capricornids overlap, lighting up the night with 20–30 meteors per hour. A double treat!

🪐 August 12 – Venus Meets Jupiter
A dazzling conjunction! Watch Venus and Jupiter, the two brightest planets, shine side by side just before dawn. Rare and breathtaking.

🌌 August 12 – Perseids Meteor Shower Peak
A fan favorite! Expect up to 100 meteors per hour — fast, bright, and often trailing. Best viewed after midnight.

🌕 September 7 – Total Lunar Eclipse (Blood Moon)
Watch the Moon turn a haunting red hue in a stunning total lunar eclipse, visible across much of the globe.

☀️ September 21 – Partial Solar Eclipse
The Moon takes a bite out of the Sun. Use eclipse glasses and catch this dramatic daytime event!

🪐 September 21 – Saturn at Opposition
Saturn shines its brightest! The planet and its rings are fully illuminated — perfect for telescope viewing.

🌕 October 7 – First Supermoon of 2025
The Moon appears larger and brighter as it swings closest to Earth. A gorgeous full moon worth photographing.

🌠 October 21–22 – Orionids Meteor Shower
Fast, bright meteors from Halley’s Comet blaze across the sky. Look up in the early hours for the best show.

🌕 November 5 – Biggest Moon of the Year
The closest supermoon of 2025 — huge, luminous, and impossible to miss. A dream for moon lovers.

🌠 December 13–14 – Geminids Meteor Shower Peak
End the year with a bang! The Geminids are bright, frequent, and colorful — up to 120 meteors per hour under dark skies.

✨ Pro Tip: Bring a blanket, binoculars, and check your local sky forecast. The best views come with patience and a dark, open sky.

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