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SlidesMania | Free Google Slides themes and PowerPoint templates.

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The best 100% free Google Slides themes and pptx templates. Your PowerPoint and Google Slides will never be the same. No registration or download limits!

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SlidesCarnival: Free PowerPoint & Google Slides Templates That Stand Out

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Captivate your audience with our collection of professionally-designed PowerPoint and Google Slides templates. Boost your presentations and make a lasting impression!

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Free Google Slides themes and Powerpoint templates | Slidesgo

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Discover the best Google Slides themes and PowerPoint templates you can use in your presentations - 100% Free for any use.

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Britannica Money

Discover all you need to know about retirement, investing, and household finance, without the jargon or agenda. Get reliable guidance, insight, and easy-to-understand explanations, written, edited, and verified to Britannica's exacting standards.

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Explore the fact-checked online encyclopedia from Encyclopaedia Britannica with hundreds of thousands of objective articles, biographies, videos, and images from experts.

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Closed quarters, vehicles faster than the speed of sound, zero gravity, and extremely volatile rockets. Do any of these things sound particularly prone to accidents? Space travel is tricky work that takes careful calculations and even more careful actions when situations get tough. Here is a list of seven accidents and disasters that have occurred during space expeditions.

STS-51-L: Space Shuttle Challenger Disaster

The space shuttle Challenger disaster that occurred on January 28, 1986, marked one of the most devastating days in the history of space exploration. Just over a minute after the space shuttle lifted off, a malfunction in the spacecraft's O-rings-rubber seals that separated its rocket boosters-caused a fire to start that destabilized the boosters and spread up the rocket itself. The shuttle was moving faster than the speed of sound and quickly began to break apart. The disaster led to the deaths of all astronauts on board, including civilian Christa McAuliffe, a participant in NASA's Teacher in Space project who was to teach classes and perform experiments while in space. The extended mission of the shuttle included deployment of satellites and the test of tools for studying astronomy and Halley's Comet. The shuttle's launch was not widely televised, but the explosion and breakup of the shuttle was visible to spectators on the ground. The launch itself, performed in 26 °F (−3 °C) weather, was predicted to encounter issues by members of the engineering team who knew of the dangers posed to O-rings by such low temperatures. Despite vocalizing these concerns, the mission continued as planned because NASA was against delaying the shuttle's launch any more, as it had already been delayed multiple times. The disaster resulted in the temporary suspension of the space shuttle program and the creation of the Rogers Commission to determine the cause and fault of the disaster.

Soyuz 1: Parachute Failure

Vladimir Komarov was one of Soviet Russia's first group of cosmonauts selected to attempt space travel. He was also the first person to enter outer space twice, though his second time would sadly be his last. During the expedition of Soyuz 1, the Soviets' first space vehicle intended to eventually reach the Moon, Komarov encountered issues with the design of his spacecraft that led to his death. The mission plan for Soyuz 1 was a difficult one: the spacecraft was to orbit Earth and then have a rendezvous with Soyuz 2. The two vehicles would have precisely matched their orbital velocities to test the first step in docking two spacecraft together. After Komarov was in orbit around Earth and it was time for Soyuz 2 to launch and meet him, problems with the spacecraft that had been largely ignored became apparent, and the Soyuz 2 mission was halted. The mission control was able to determine that one of the solar panels on Soyuz 1 had not deployed and was limiting the power to the spacecraft dramatically. Equipment that needed the power from this solar panel was malfunctioning, creating difficulties in controlling the vehicle. It was decided that the mission could not continue, and Komarov began preparing for his return to Earth. After some trouble breaching the atmosphere, the parachutes on Soyuz 1 were deployed but did not unfold correctly, making the spacecraft impossible to slow down. Soyuz 1 crashed into Earth on April 24, 1967, killing cosmonaut Vladimir Komarov. Komarov was the first fatality in spaceflight and, since his death, has been honored with memorials and monuments near the site of the crash and in Russia for his bravery and skill.

STS-107: Space Shuttle Columbia Disaster

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7 Accidents and Disasters in Spaceflight History

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It doesn't take rocket science to understand why space travel can be a little tricky.

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Space Tragedies: The 5 Worst Space Disasters in History

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These tragic disasters have left a legacy that makes spaceflight much safer today.

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SpaceX designs, manufactures and launches advanced rockets and spacecraft. The company was founded in 2002 to revolutionize space technology, with the ultimate goal of enabling people to live on other planets.

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Blue Origin was founded by Jeff Bezos with the vision of enabling a future where millions of people are living and working in space for the benefit of Earth.

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Send Your Name to Jupiter's Moon Europa

Go farther with NASA - all the way to Jupiter's icy moon Europa. Sign up to send your name on NASA's Europa Clipper spacecraft by Sunday, Dec. 31.

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The Space Station Turns 25

The International Space Station advances scientific knowledge in Earth, space, physical, and biological sciences, for the benefit of all.

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Technology Drives Exploration

NASA's Space Technology Mission Directorate aims to transform future missions while ensuring American leadership in aerospace.

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Image Of The Day

Globular Cluster Omega Centauri Looks Radiant in Infrared

A cluster brimming with millions of stars glistens like an iridescent opal in this image from NASA's Spitzer Space Telescope. Called Omega Centauri, the sparkling orb of stars is like a miniature galaxy. It is the biggest and brightest of the 150 or so similar objects, called globular clusters, that orbit around the outside of our Milky Way galaxy. Stargazers at southern latitudes can spot the stellar gem with the naked eye in the constellation Centaurus. Globular clusters are some of the oldest objects in our universe. Their stars are over 12 billion years old, and, in most cases, formed all at once when the universe was just a toddler. Omega Centauri is unusual in that its stars are of different ages and possess varying levels of metals, or elements heavier than boron. Astronomers say this points to a different origin for Omega Centauri than other globular clusters: they think it might be the core of a dwarf galaxy that was ripped apart and absorbed by our Milky Way long ago. In this new view of Omega Centauri, Spitzer's infrared observations have been combined with visible-light data from the National Science Foundation's Blanco 4-meter telescope at Cerro Tololo Inter-American Observatory in Chile. Visible-light data with a wavelength of .55 microns is colored blue, 3.6-micron infrared light captured by Spitzer's infrared array camera is colored green and 24-micron infrared light taken by Spitzer's multiband imaging photometer is colored red. Where green and red overlap, the color yellow appears. Thus, the yellow and red dots are stars revealed by Spitzer. These stars, called red giants, are more evolved, larger and dustier. The stars that appear blue were spotted in both visible and 3.6-micron-, or near-, infrared light. They are less evolved, like our own sun. Some of the red spots in the picture are distant galaxies beyond our own.

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Watch full episodes of your favorite HISTORY series, and dive into thousands of historical articles and videos. To know History is to know life.

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Educational games and videos from Daniel Tiger’s Neighborhood, Wild Kratts and other PBS KIDS shows!

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Access Google Drive with a Google account (for personal use) or Google Workspace account (for business use).

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EBSCO Information Services, Inc. | www.ebsco.com

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EBSCO is the leading provider of research databases, e-journals, magazine subscriptions, ebooks and discovery service for academic libraries, public libraries, corporations, schools, government and medical institutions

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Discovery Education | Your Daily Learning Platform

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Discovery Education inspires educators to go beyond traditional learning with award-winning digital content and professional development. Learn more today!

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For 65 years, ABC-CLIO has been providing reference, nonfiction, online curriculum, and professional development to inspire life-long learning for today's students and educators. See how our digital resources can support learning in your institution: Schools & Districts Academic Libraries Public Libraries Schools & Districts Our 17 school databases cover core topics in social studies, combining [...]

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Canva is a free-to-use online graphic design tool. Use it to create social media posts, presentations, posters, videos, logos and more.

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Free creative tools for everyone. Including the world famous Brush Ninja animated gif maker. Use for free on your web browser on any device.

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ABCya! • ABCya! Paint - Digital Painting Skills

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ABCya Paint is a great way for kids to engage in digital storytelling! Fun tools and accessories such as stickers, coloring pages, spray paint, stamps, typing, and rainbow brushes help kids’ stories come to life. Images can be saved and printed and shared with classmates and families.

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Fast drawing for everyone. AutoDraw pairs machine learning with drawings from talented artists to help you draw stuff fast.

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Kiddle is a safe search engine, offering a safe web, image, and video search. Results are vetted by editors.

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BrainPOP - Animated Educational Site for Kids - Science, Social Studies, English, Math, Arts & Music, Health, and Technology