Praxis-Creative

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[Mathematica @mathemetica]

Harish-Chandra is one of the most underrated mathematicians in history. Born in Kanpur, India in 1923, he first studied physics and earned his PhD from the University of Cambridge in 1947 under Nobel laureate Paul Dirac.

During his time at Cambridge, he even pointed out a mathematical error in the work of another Nobel laureate, Wolfgang Pauli. Finding theoretical physics insufficiently rigorous, he shifted his focus to pure mathematics.

He went on to build the modern theory of representations of semisimple Lie groups and developed harmonic analysis on these groups and their homogeneous spaces.

His major contributions include the Harish-Chandra character formula (which extends the notion of characters to infinite-dimensional representations), the Harish-Chandra regularity theorem, the Harish-Chandra homomorphism, and key results on discrete series representations and cusp forms.

These works provided the rigorous mathematical foundation for understanding symmetries in quantum mechanics, quantum field theory, and particle physics, and later influenced areas like the Langlands program.

He received the Cole Prize from the American Mathematical Society in 1954 and India’s Padma Bhushan in 1977. From 1963 until his death in 1983, he worked as a professor at the Institute for Advanced Study in Princeton, where he produced much of his most important research.

[Physics In History @PhysInHistory]

The nitrogen in our DNA, the calcium in our teeth, the iron in our blood, the carbon in our apple pies were made in the interiors of collapsing stars. We are made of starstuff.

- Dr. Carl Sagan

[Physics In History @PhysInHistory]

“I think I can safely say that nobody understands quantum mechanics.”

- Richard Feynman (1964 Cornell Lecture)

[NBC News @NBCNews]

BREAKING: At least 12 people were shot when gunmen opened fire near a festival in Ohio, officials say. The shooters are still at large. https://t.co/30jQFZRi2z

[Praxis-Creative @Praxis_Creative]

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[NBC News @NBCNews]

BREAKING: President Trump signs order seeking early access to powerful AI models before their release. https://t.co/CVjhS1JPam

[Praxis-Creative @Praxis_Creative]

Hey, check out this event: Indeed Bootcamp: Tips and Strategies for Using Indeed in Your Job Search on 06/18/2026 @12:00(EDT), interested? https://t.co/je1Xw2ZGcK

[Massimo @Rainmaker1973]

Researchers examining six meteorites from Mars found clear evidence of earthly contamination embedded in the samples. The intruders included ballpoint pen ink, gel pen dye, polishing abrasives, industrial lubricants, synthetic fibers, and even microscopic diamond particles from laboratory tools.

These findings are significant because scientists scrutinize Martian meteorites for delicate chemical signatures that could reveal the planet’s ancient environment, past water activity, or potential biosignatures. Even tiny contaminants can interfere with those analyses.

Using Raman spectroscopy, a non-destructive laser technique that identifies molecules by their light-scattering patterns, the team pinpointed the foreign substances. One prominent contaminant was Pigment Blue 15 (copper phthalocyanine), a common dye in blue ballpoint pens. Another sample contained gel-pen ink. Additional residues included silicon carbide from polishing compounds, diamond grains from cutting tools, and molybdenum-based lubricants used in machinery.

Alarmingly, contamination appeared even in a meteorite that had not undergone laboratory preparation, likely introduced through simple handling, packaging, clothing, or labels (including polyester fibers).

This study highlights a growing challenge in planetary science. With NASA’s Perseverance rover collecting pristine samples from Mars for a future return mission, the risk of similar contamination during handling, cutting, polishing, and analysis on Earth remains high. A microscopic smear of ink or lubricant could easily be mistaken for, or mask, genuine Martian organic compounds.

The research underscores the need for stricter contamination controls and better documentation of sample handling to ensure the reliability of future Mars sample studies.

[Coloma, L., et al. (2026). "Analysing the sample preparation process in meteorites: a Raman spectroscopy study of contaminants in Martian samples." Applied Geochemistry]

[The Associated Press @AP]

BREAKING: Pope Leo XIV makes historic apology for Holy See's own role in legitimizing slavery and for failing to condemn it for centuries. https://t.co/cQz8oU5Wkh

[Crazy Moments @Crazymoments01]

Only kind people will share this... Humanity is still alive, respect for this man ❤️

[Praxis-Creative @Praxis_Creative]

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[The New York Times @nytimes]

Breaking news: Seventeen American passengers who were aboard the cruise ship that faced a hantavirus outbreak have landed in Nebraska, a U.S. official said. They will be taken to a quarantine center.

https://t.co/xmFtcDOHUt

[Praxis-Creative @Praxis_Creative]

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[NBC News @NBCNews]

BREAKING: Eight children were killed in an "extensive" mass shooting in Shreveport, Louisiana, police say. The suspected shooter is also dead. https://t.co/pyg2ee1Kvr

[Praxis-Creative @Praxis_Creative]

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[New York Post @nypost]

Grandfather of 7 drowned during baptism - with pastor saying she saw him 'dancing with Jesus' https://t.co/cjD3rMhq38

[The General @GeneralMCNews]

BREAKING: Israeli media reports that if the United States carries out a ground operation in Iran, it would have to go alone, with Israeli forces not participating on the ground.

[China Now @ChinaNow24]

JUST IN:

A mysterious loud sound shook the Houston area on Saturday afternoon. NASA says it was a meteorite.

A woman claims that a space rock struck her home after an explosion in the Houston area that frightened local residents.

[NBC News @NBCNews]

BREAKING: Iranian Foreign Minister tells NBC News that Iran is ready for a U.S. ground invasion of the country as the war between Iran, the U.S. and Israel has quickly spread across the region.

He also refuses any negotiations with the U.S. and says that Iran had not asked for a ceasefire. https://t.co/R39NPQCjth

[China Now @ChinaNow24]

BREAKING:

Iran has announced that it will allow only China to pass through the Strait of Hormuz , as an expression of gratitude for Beijing’s supportive stance toward Tehran during the war.

The strait has been closed to all other ships without exception, with a clear warning that any unauthorized crossing will be directly targeted by Iranian forces.