Rafael Perez

Loving my life and those in it.

[GTA 6 Intel @ConstantGTA]

Where Every GTA Protagonist Is Before GTA 6

[Run The Sim @RunTheSimLab]

This is what will eventually happen to the Sun and our Earth.

In about a billion years a 10% brighter Sun boils the oceans away, and about 5 billion years from now it swells into a red giant over 200 times wider, swallowing Mercury, Venus and probably Earth. It never explodes; it leaves a white dwarf the size of Earth.

Music: Holst, The Planets (1921 score).

[OMGFacts @OMGFacts]

🔬 Scientists hit the coldest temp ever recorded

German team cooled atoms to 38 picokelvins.

Colder than deep space itself.

Sources: Phys. Rev. Letters, New Atlas

#omgfacts #physics #quantum #space

[Melissa Chen @MsMelChen]

this video is a must-watch if you’re following the Florida Learjet crash:

A meteorologist and pilot wanted to know how is it that a plane equipped with Doppler radar did not see the storm ahead?

Turns out that the onboard radar can tilt and if the pilots had tilted it downwards, they would have seen that stronger storm building up.

How did they figure this out?

They took the actual National Weather Service Doppler radar data from the storm, then recalibrated and resampled it to simulate exactly what a Learjet’s onboard Collins WXR-840 X-band radar (the 3 cm wavelength system many of these jets carry) would have seen at 35,000 feet in −47 °C air.

The result is striking. At a normal 0° tilt, the returns look like faint ice-phase echoes. A nothingburger, basically.

Tilt the same radar down roughly 5° and it suddenly lights up with the stronger lower core of a rapidly intensifying storm directly ahead.

NWS data shows the storm tops were around 31,000 ft just before the jet penetrated, shot up to 40,000 ft while they were in it, then collapsed back to ~33,000 ft after they exited.

This confirms that they flew into a storm cloud with explosive growth and collapse with violent updrafts and downdrafts, exactly the kind of thing an X-band radar looking straight ahead at cruise altitude can easily under-sample.

@EricBurrisWX walks through the radar geometry, the crystal reflectivity at those temperatures, and low-key gives one of the clearest, most technically grounded explanations out there.

[Your GTA VI Mayor @GTAVIMAYOR]

#GTA6 Cars vs Real Cars : What #Rockstar Got Accurate #fypシ゚viral #GrandTheftAutoVI

[TaraBull @TaraBull]

This gives me chills after researching what it takes to become A Guard At The Tomb Of The Unknown Soldier

[Massimo @Rainmaker1973]

The five hour chain of events that ended the age of the dinosaurs.

[alex jungle @JungleAlex13227]

What would the passengers of the Learjet Florida have felt in their last moments. They felt FEAR. Profound, existential fear and knowledge of their imminent doom. Stop saying they felt “nothing”

[Run The Sim @RunTheSimLab]

If you drop a teaspoon of neutron star into the ocean at Point Nemo, the most remote spot on Earth, this is what would happen: it explodes on contact, falling debris sets the sky on fire over every country within two hours, and the oceans boil away in about four months, leaving only salt on the sea floor.

[𝙴𝚕𝚖𝚌𝚊𝚛𝚕𝚜 𓃠 @ifechukwumuo]

Explaining 4th Dimension with a 2 Dimensional cortex brain is wild. It's like explaining what God sees when He looks at us.

[Astro Horizon @Astro_horizon00]

Cosmic Timeline: Earth's Birth, Evolution, and Ultimate Fate
Detailed Description of the Image:
This 3x3 grid illustrates the entire life cycle of our planet:
4.5 Billion Years Ago: A molten, volcanic proto-planet.
3.8 Billion Years Ago: The young Earth with oceans and a developing atmosphere.
2.5 Billion Years Ago: An evolving world with primitive continents and early signs of life.
Today: The vibrant, familiar blue marble with continents and clouds.
100 Years Later: A world impacted by advanced urbanization and climate change.

[Planet Earth Facts 🌏 @PlanetEarth1012]

A star in Andromeda, 100,000× brighter than the Sun, just switched off.

[Historical Dems @Jesamobono]

Almost no one knows what actually in side the Burj khalifa. not just how tall it is, but what people do on every level floor by Floor

[Amy Leigh @IAmyLeigh]

🚨New details emerge in the tragic Florida Learjet crash. Aviation expert "Pilot Debrief" breaks down three critical factors under NTSB investigation: rapid thunderstorm growth, past altitude control anomalies, and in-dive structural stress.

​Watch the full analysis:
https://t.co/xnVt5kDBD9

#Aviation #NTSB #Safety

🎥PilotDebrief

[RyanPatrick🇺🇸🦅 @RyanHatesGovt]

A Learjet 60 at 35,000 ft reported light clear ice & turbulence, then dropped out of the sky in under 2 minutes near Palm Beach, killing all 9. NTSB found the left elevator in pieces 1.3–3.8 miles away—parts came off before impact.

Storm updrafts can deliver supercooled water high up, forming clear ice that runs back past de-ice systems, cuts lift, raises stall speed, and erases the already-narrow “coffin corner” margins on a heavy jet. Small bizjet radar often misses fast-building cells until it’s too late. Stall warning is set for a clean wing, so the first clue can just be the airplane sinking.

Could any pilot have saved it once that combination locked in? The video walks through why the margins were so thin.

[Massimo @Rainmaker1973]

The Milky Way is so vast, it’s impossible to truly grasp.

[🎞️ melonimation]

[Alex Boge @alexboge]

WHAT HAPPENS WHEN A 20,000-POUND LEARJET SLAMS INTO THE GROUND AT HUNDREDS OF MILES PER HOUR?

Many people have been fascinated by the enormous crater left behind after the Learjet 60 crashed in Palm Beach County, Florida. Others doubt an aircraft could produce such destruction.

But consider the physics.

A Learjet 60 weighing approximately 20,000 pounds, descending at an extraordinarily steep angle at a speed potentially exceeding 600 mph, strikes asphalt and compacted soil.

In a fraction of a second, an enormous amount of kinetic energy must be dissipated.

The aircraft’s structure is violently crushed and fragmented. Some energy goes into deforming and accelerating the wreckage, but a substantial amount is transferred into the pavement and underlying soil, crushing, displacing and ejecting material to form an impact crater.

Fuel released during the impact ignites, producing an enormous fireball. Wreckage is thrown outward. Other pieces separated before the aircraft reached the ground. The NTSB recovered pieces of the left elevator 1.3 to 3.8 miles from the crater.

Residents found debris nearby. Tragically, human remains were also recovered.

An intact aircraft at the bottom of the crater would be surprising.

This animation illustrates the physics of a high-speed aircraft impact, including kinetic energy, deceleration, impact forces, ground pressure and crater formation. It’s worth watching.

MY REVIEW OF THE PHYSICS AND MATHEMATICS

I reviewed the calculations in this video. The principal mathematical calculations check out, and the overall explanation is consistent with established physics.

However, several figures deserve clarification.

Impact speed: The video uses a descent rate of 251 m/s and a horizontal speed of 123 m/s, giving about 280 m/s (626 mph). Published ADS-B data shows descent rates exceeding 30,000 ft/min. One analysis estimates a total speed of about 490 mph near 10,000 feet, although the aircraft’s velocity could have changed substantially before impact. The impact velocity remains unverified.
Kinetic energy: A mass of 9,000 kg (about 19,800 pounds) at 280 m/s gives about 353 million joules. At 490 mph, it would be about 216 million joules. Still enormous.
Stopping distance: The video assumes about 18 meters, roughly the length of the aircraft, giving an average deceleration of about 220 g. The math is correct, but the stopping distance is an assumption.
Impact force: About 20 million newtons follows from those assumptions. This is a simplified average. Actual forces varied enormously as the aircraft fragmented and penetrated the ground.
Ground pressure: The video assumes a contact area of about 3 square meters, giving roughly 6.5 million pascals. It compares that with typical allowable soil bearing pressures of a few hundred thousand pascals. But those values include safety margins and aren’t directly comparable to a dynamic impact. The calculation is illustrative, not a measurement.

A FEW OTHER NITPICKS:

A broken water main reportedly helped fill the crater, so it wasn’t all groundwater.
The animated aircraft reaches the ground with its tail intact, even though the video itself says tail parts separated before impact.

THE BOTTOM LINE

The exact impact conditions remain uncertain, and this animation is not a forensic reconstruction of the accident.

Nevertheless, its central explanation is physically sound.

An aircraft carrying hundreds of millions of joules of kinetic energy into the ground can produce catastrophic fragmentation, tremendous ground deformation and an extensive debris field.

For those who insist an aircraft couldn’t possibly create this crater or leave so little recognizable wreckage, this video provides a compelling illustration of the physics involved.

There is nothing mysterious about the basic principles. The precise details of this accident remain a matter for the NTSB.

[Vino🕶️🇧🇷🇺🇸 @afg1911a1]

Great explanation on this. So sad.

[movie tweets @lauren_w67]

How Russia Lost Alaska to America for 2
Cents an Acre?

[Diniay's seeing BTS day3⊙⊝⊜ @dyniijm7]

Kecelakaan pesawat ini lewat terus
Ngeri banget sumpah sampe hancur berkeping keping gituh🥹