Hi, what do you want to do?
NASA
NASA | The Dual Personality of the 'Christmas Burst'
The Christmas burst, also known as GRB 101225A, was discovered in the constellation Andromeda by Swift's Burst Alert Telescope at 1:38 p.m. EST on Dec. 25, 2010. Two very different scenarios successfully reproduce features of...
NASA
NASA | Animation: NASA's Swift Satellite Spots Black Hole Devouring A Star
In late March 2011, NASA's Swift satellite alerted astronomers to intense and unusual high-energy flares from a new source in the constellation Draco. They soon realized that the source, which is now known as Swift J1644+57,...
Curated Video
Advanced Swift 2 Application Development (Video 16)
The number of smartphone users is increasing every single day, and as more and more of them are looking for new and interesting ways to improve their lives through mobile applications, the need for a language that will deploy on...
NASA
NASA | Massive Black Hole Shreds Passing Star
This artist’s rendering illustrates new findings about a star shredded by a black hole. When a star wanders too close to a black hole, intense tidal forces rip the star apart. In these events, called “tidal disruptions,” some of...
NASA
A Day in the Life of a NASA Satellite Team
Launched on Nov. 20, 2004, NASA's Neil Gehrels Swift Observatory has been on the hunt to uncover the mystery of the universe’s most powerful explosions: gamma-ray bursts. These extreme events are some of the farthest objects...
NASA
NASA's Kepler, Swift Missions Harvest ‘Pumpkin’ Stars
Astronomers using observations from NASA's Kepler and Swift missions have discovered a group of rapidly spinning stars that produce X-rays at more than 100 times the peak levels ever seen from the sun. The...
NASA
NASA | GLASTcast | Episode 3: Swift and GLAST
NASA's GLAST mission is an astrophysics and particle physics partnership, developed in collaboration with the U.S. Department of Energy, along with important contributions from academic institutions and partners in France,...
Professor Dave Explains
William McKinley: Annex Like the Dickens (1897 - 1901)
William McKinley ushered in a new era for America, one of imperialism that would foreshadow things to come. He was also the third president to be assassinated. He manufactured a reason to go to war, he strengthened the government, hey...
NASA
NASA | Neutron Stars Rip Each Other Apart to Form Black Hole
This supercomputer simulation shows one of the most violent events in the universe: a pair of neutron stars colliding, merging and forming a black hole. A neutron star is the compressed core left behind when a star born with...
NASA
NASA | Swift: A Decade of Game-changing Astrophysics
Over the past decade, NASA's Swift Gamma-ray Burst Explorer has proven itself to be one of the most versatile astrophysics missions ever flown. It remains the only satellite capable of precisely locating gamma-ray bursts -- the...
NASA
NASA | GLASTcast | Special Edition: Launching a Spacecraft
NASA's GLAST mission is an astrophysics and particle physics partnership, developed in collaboration with the U.S. Department of Energy, along with important contributions from academic institutions and partners in...
Curated Video
Application Development with Swift 2 (Video 14)
Swift 2 is the latest iteration of Apple's native programming language for iOS devices. If you're an aspiring iOS application developer who is looking to build apps for the App Store, you'll need to use Swift. The language boasts...
Curated Video
Mastering Swift 2 Programming (Video 52)
Swift 2 is a multi-paradigm programming language that has expressive features familiar to modern functional languages, and does not forget the object-oriented features of Objective-C. Things that took a block of code in...
Curated Video
Using Front-End Estimation to Solve Multi-Step Word Problems
In this video, the teacher explains how to solve multi-step word problems using front-end estimation. They demonstrate how to determine the two highest place values in a number and use them to estimate the answer.
Curated Video
Mastering Swift 2 Programming (Video 31)
Swift 2 is a multi-paradigm programming language that has expressive features familiar to modern functional languages, and does not forget the object-oriented features of Objective-C. Things that took a block of code in...
NASA
NASA | Swift Captures Flyby of Asteroid 2005 YU55
Asteroid 2005 YU55 whisks through the field of view of Swift's Ultraviolet/Optical Telescope (UVOT) on Nov. 9, just hours after the space rock made its closest approach to Earth. The video plays on a background image from the Digital...
TLDR News
Is Biden Being Too Weak on Russia? Biden's Russia Policy Explained - TLDR News
With Russia poised for military action against Ukraine at any time, and NATO rushing to find a diplomatic solution, we take a look at America’s role in all this, and how President Biden is approaching the situation. So in this video, we...
Curated Video
Mastering Swift 2 Programming (Video 44)
Swift 2 is a multi-paradigm programming language that has expressive features familiar to modern functional languages, and does not forget the object-oriented features of Objective-C. Things that took a block of code in...
NASA
NASA | A Flickering X-ray Candle
The Crab Nebula, created by a supernova seen nearly a thousand years ago, is one of the sky's most famous "star wrecks." For decades, most astronomers have regarded it as the steadiest beacon at X-ray energies, but data from orbiting...
Curated Video
Mastering Swift 2 Programming (Video 32)
Swift 2 is a multi-paradigm programming language that has expressive features familiar to modern functional languages, and does not forget the object-oriented features of Objective-C. Things that took a block of code in...
NASA
NASA | X-ray Nova Reveals a New Black Hole in Our Galaxy
On Sept. 16, NASA's Swift satellite detected a rising tide of high-energy X-rays from a source toward the center of our Milky Way galaxy. The outburst, produced by a rare X-ray nova, announced the presence of a previously...
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...
NASA
NASA | Colliding Neutron Stars Create Black Hole and Gamma-ray Burst
Armed with state-of-the-art supercomputer models, scientists have shown that colliding neutron stars can produce the energetic jet required for a gamma-ray burst. Earlier simulations demonstrated that mergers could make black holes....
Curated Video
The Korean War, the 1953 Armistice
Brutal Korean War becomes stage for the USSR and USA to test their arms strength. In between Korean people lost many human lives which ended up at the same borders as before the war i.e. 38th Parallel.