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The path the Earth takes around the sun is in just the right place. The trajectory of the Earth's orbit ensures life is able to exist, and this orbital journey influences almost everything on Earth. Part of the "Orbit: Earth's Extraordinary Journey" series.
(Source: DCMP)
Earth spins around its axis at an angle of 23 degrees. This means that as Earth orbits the sun, different parts of the planet get more or less exposure to the sun. The tilt of the Earth is responsible for the seasons, climate, and weather. Part of the "Orbit: Earth's Extraordinary Journey" series.
Spin plays a key role in controlling the planet. It drives the day and night cycle and controls the weather and climate. This episode explores how the spin of Earth sets the rhythm of life on planet Earth. Part of the "Orbit: Earth's Extraordinary Journey" series.
With the retirement of NASAs space shuttle fleet in 2011, the role of getting people, satellites and other instruments into space falls to private companies. As of June 2011, there have been only 523 people to reach the 100 kilometer mark (considered human spaceflight), and only 24 have traveled beyond low Earth orbit. It is projected that within ten years, the number of people who will have flown into space will increase by about 600 percent due to the increasing market of suborbital spaceflight and the possibility of private citizens utilizing space flight. Students will explore suborbital and orbital spaceflight and the requirements necessary for vehicles to achieve these journeys. They also go behind the scenes of many of the private companies involved in taking on the tasks to travel to low Earth orbit and beyond and uncover some of the technology used to accomplish these goals.
Figure 2.2 (OpenStax, Biology 2e) caption: Elements, such as helium, depicted here, are made up of atoms. Atoms are made up of protons and neutrons located within the nucleus, with electrons in orbitals surrounding the nucleus.
(Source: OpenStax)
Examines Mercury, the closest planet to the Sun. Uses photography from the Mariner fly-bys and animation to show the planet's surface features. Describes its characteristics, length of day vs. length of year, its two sunrises, and its orbit. Time-lapse images record Mercury passing across the Sun, an event that occurs only 13 times a century!
Students explore the force of gravity. This video also discusses the role of gravity in the solar system. Concepts and terminology include force, gravity, attraction, orbits, and tides.
How does NASA spot asteroids that maybe getting too close to Earth for comfort? It takes a lot of data gathering by computers, satellites, and individuals. Asteroids are tracked and monitored frequently by astronomers.
NOAA's environmental satellites provide data from space to monitor Earth to analyze coastal waters, relay life-saving emergency beacons, and predict and track tropical storms and hurricanes. NOAA operates three types of satellite systems for the United States: polar-orbiting satellites, geostationary satellites, and deep space satellites. Polar-orbiting satellites circle Earth and provide global information from 540 miles above Earth. Geostationary satellites constantly monitor the Western Hemisphere from around 22,240 miles above Earth. The deep space satellites orbit one million miles from Earth, providing space weather alerts and forecasts while also monitoring the amounts of solar energy absorbed by Earth every day.
As shown on the History Channel. Why do we have ice ages and when is the next one due? Chart the progress of different ice ages through the history of our planet, from Snowball Earth hundreds of millions of years ago to the recent ice ages. As the Earth circles the sun, its orbit changes slightly and so does it angle of rotation. When the right wobble in our rotation combines with the right orbit, the Earth is, and will again be, plunged into an ice age--but maybe not for a few thousand years.
Dwarf planets are a lot like regular planets. They both have enough mass and gravity to be nearly round, and they both travel through space in a path around the Sun. However, the path of the dwarf planet is full of objects like asteroids. A regular planet has a clear path around the sun.
Part of a series that features a wide variety of video footage, photographs, diagrams and colorful, animated graphics and labels. Begins with a simple definition of the term and concludes with a critical thinking question. For this particular video, students will focus on the lunar cycle. Part of the Science Video Vocab Series.
Part of a series that features a wide variety of video footage, photographs, diagrams and colorful, animated graphics and labels. Begins with a simple definition of the term and concludes with a critical thinking question. For this particular video, students will focus on the term ellipse. Part of the Science Video Vocab Series.
Gravity rules the life cycle of stars. During the Red Giant dying stage in the life of an average size star, its outer layers are blown off in vast clouds of dust and gas called "nebulae" that contain hydrogen, oxygen, and nitrogen. Gravity crushes the remaining atoms into a remnant core called a white dwarf. The gravity of giant stars-10 to 20 times larger than average-will, at the end of their life in a supernova explosion, crush together even mutually repulsive protons and electrons, leaving a remnant rotating core of neutrons (i.e., a pulsar). Also explains how stars 20 to 100 times average size collapse into a core so dense that its gravity doesn't even allow light to escape (i.e., a black hole).
Bill Nye explains how NASA successfully steers the “Juno” spacecraft into orbit around Jupiter. Nye reveals the science behind interplanetary navigation. Part of the “Why With Nye” series.
Diagram of a hydrogen atom. Design modalities for the image include braille with and without labels, print with and without labels in greyscale, color, and texture.
(Source: Benetech)
Diagram of a helium atom. Design modalities for the image include braille with and without labels, print with and without labels in greyscale, color, and texture.
Diagram of a lithium atom. Design modalities for the image include braille with and without labels, print with and without labels in greyscale, color, and texture.
Matter is made up of tiny particles called molecules. Host, Max Orbit, helps students learn all about the different properties, qualities, and characteristics of matter. He also discusses solids, liquids, and gases. Part of the "Way Cool Science" series.
Dr. Bidushi Bhattacharya explains how astronomers find tiny space rocks. Since asteroids don't move in a predictable orbit, astronomers must take a series of photographs to track the asteroids. Part of the "Ask an Astronomer" series.
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