SpaceTime with Stuart Gary

The moons of Uranus may preserve evidence of one of the most unstable periods in the early Solar System.

Long before the giant planets settled into their present orbits, Jupiter, Saturn, Uranus and Neptune probably migrated through a crowded outer Solar System filled with icy planetesimals and perhaps even one or more additional ice-giant-sized planets.

During that phase, close gravitational encounters could have rearranged the orbits of the giant planets and may have expelled a lost planet into interstellar space.

The key idea is that the moons of Uranus are not just passive objects orbiting a distant planet.

They are fragile dynamical records.

If Uranus experienced many strong close encounters with other giant planets, its regular moons should have been severely disturbed, scattered, or destroyed.

Yet today Uranus still has a system of large moons, including Miranda, Ariel, Umbriel, Titania and Oberon.

Their survival places limits on how violent the early instability could have been.

New simulations suggest that many plausible versions of the early Solar System’s instability would have destabilized Uranus’ moons.

This makes the current moon system difficult to explain unless the real history was more specific than the simplest models.

Uranus may have avoided the most destructive encounters, its moons may have been partly rebuilt after collisions, or the early Solar System may have included an extra giant planet that changed the way the instability unfolded before being ejected.

Miranda is especially interesting because its surface already shows signs of a complicated past, with huge fractures, disrupted terrains and evidence of major geological reworking.

That does not prove that a missing planet directly shaped Miranda, but it supports the broader idea that Uranus’ moons may have been altered by large-scale events, including the impact that tilted Uranus onto its side and the later migration of the giant planets.

The broader importance is that Uranus could help reconstruct a lost chapter of Solar System history.

Its moons may contain clues about whether the outer Solar System once had more giant planets than it has today.

Although deleted, the NAMP document can still be accessed through the Wayback Machine.

There are some really crazy things inside.

First, Kabbani redefines antisemitism out of existence.

Citing Georgetown professor John Esposito, he argues that "Semitism" originally referred to speakers of Semitic languages, which includes Arabs, so Islamophobia is "a modern kind of antisemitism."

The word coined to describe anti-Jewish hatred gets repurposed into something Muslims primarily suffer from.

Esposito happens to be a self-described "very close friend" and longtime defender of Sami Al-Arian, the convicted Palestinian Islamic Jihad financier who was deported to Turkey.

Second, Kabbani doesn't just call the IDF a terrorist organization.

He lists sixteen "genocides" he attributes to "Zionist terrorist groups including the IDF" since 1947 — none of which were even remotely close to actual genocide, obviously.

These include Haifa, Deir Yassin, Tantura, Al-Lydd, Qibya, Kafr Qasim, Khan Younis, Abou Zaabal, Bahr al-Baqar, Sabra and Shatila, Al-Aqsa, The Cave of the Patriarchs, Qana, Jenin, Gaza in 2008, 2012, and 2014.

And the ongoing "Gaza genocide" now.

Third, Kabbani writes that "not a single Israeli infant was a casualty during the said attacks" and that the one child who died "occurred two days following the attack, with circumstances involving IDF gunfire."

Yet Amnesty International — no friend of Isreal — has documented at least 36 Israeli children murdered that day.

And yes, one infant was decapitated.

Despite all this, NAMP is still affiliated with 16 of Britain's 43 police forces.

For a half-century, astronomers have been searching for a hidden force at the center of our galaxy.

Now, scientists have finally uncovered direct evidence of an active wind blowing from Sagittarius A*, the supermassive black hole at the heart of the Milky Way. ​

Using advanced radio telescopes (ALMA observatory), researchers mapped the cold, dusty gas near the galactic center.

Within this dense region, they discovered a massive, cone-shaped void.

This giant empty space was meticulously carved out by a steady breeze of hot material being pushed continuously away from the black hole.

The observations suggest this gentle but persistent wind has been blowing outward for roughly 20,000 years. ​

This landmark discovery reshapes our understanding of our cosmic neighborhood.

It proves that even relatively quiet black holes actively interact with their host galaxies.

By observing this wind up close, scientists now possess a unique laboratory to study exactly how these outflows influence the birth of new stars and shape the long-term evolution of galaxies throughout the universe.