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PBS
What If the Galactic Habitable Zone LIMITS Intelligent Life?
Our solar system is a tiny bubble of habitability suspended in a vast universe that mostly wants to kill us. In fact, a good fraction of our own galaxy turns out to be utterly uninhabitable, even for sun—like stellar systems. Is this why...
PBS
The Alchemy of Neutron Star Collisions
Carl Sagan’s famous words: “We are star stuff” refers to a mind-blowing idea – that most atomic nuclei in our bodies were created in the nuclear furnace and the explosive deaths of stars that lived in the ancient universe. In recent...
Crash Course
Nebulae
Astronomers study a lot of gorgeous things, but nebulae might be the most breathtakingly beautiful of them all. Nebulae are clouds of gas and dust in space. They can glow on their own or reflect light from nearby stars. When they glow...
Crash Course
High Mass Stars
Massive stars fuse heavier elements in their cores than lower mass stars. This leads to the creation of heavier elements up to iron. Iron robs critical energy from the core, causing it to collapse. The shock wave, together with a huge...
PBS
Neutron Stars Collide in New LIGO Signal?
Last year LIGO announced the detection of gravitational waves from the merger of two black holes. The science world went a little crazy. Only a few weeks ago a new rumour emerged: that LIGO had, for the first time, spotted gravitational...
SciShow
The Smallest Star in the Universe
SciShow Space takes you to the smallest star in the universe, and explains how astronomers figured out that's what it was!
Crash Course
Star Clusters
Last week we covered multiple star systems, but what if we added thousands or even millions of stars to the mix? A star cluster. There are different kinds of clusters, though. Open clusters contain hundreds or thousands of stars held...
PBS
The Star at the End of Time
If we, or any conscious being is around to witness the very distant future our galaxy, what will they see? How long will life persist as the stars begin to die?
Science360
Best image ever of planet formation around infant star taken by ALMA
The National Science Foundation-funded National Radio Astronomy Observatory expanded on a news release related to the Atacama Large Millimeter/submillimeter Array's (ALMA) new high-resolution capabilities.
Astronomers...
Astronomers...
NASA
Hubble Tracks Origins Of Energy Blasts
Fast radio bursts, or FRBs, are extraordinary events that generate as much energy in a thousandth of a second as the Sun does in an entire year!
Astronomers using NASA’s Hubble Space Telescope have...
Astronomers using NASA’s Hubble Space Telescope have...
Astrum
How do planets orbit in multi-star systems?
Can planets exist in multi-star systems, and what would that look like from their perspective? Thanks to Blinkist for sponsoring today's video.
NASA
NASA | X-ray Satellites Monitor the Clashing Winds of a Colossal Binary
O-type stars are among the most massive and hottest known, pounding their surroundings with intense ultraviolet light and powerful outflows called stellar winds. NASA's Swift and ESA's XMM-Newton X-ray observatories took part in a...
Khan Academy
Lifecycle of Massive Stars, Stars, Black Holes and Galaxies, Cosmology & Astronomy
A massive star has a mass greater than nine times that of our sun. Sal focuses on the fusion and chemical reactions that take place during the lifecycle of a massive star. He clearly explains the gravitational pull to the chemical...
Khan Academy
Supernova Clarification, Stars, Black Holes and Galaxies, Cosmology and Astronomy
In need of clarification on the last Khan Academy video on supernova? A short video explains that while humans observed the event that became the Crab Nebula 1,000 years ago, the actual event occurred 7,500 years ago.
Crash Course
Crash Course Astronomy #34: Binary and Multiple Stars
Stellar mass black holes form when a very massive star dies, and its core collapses. Black holes come in different sizes, but for all of them, the escape velocity is greater than the speed of light, so nothing can escape, not matter or...
Khan Academy
Khan Academy: Life and Death of Stars: Lifecycle of Massive Stars
Discusses the lifecycle of massive stars, ones that are many times larger than our own Sun. [6:41]