Geodesy is a field of study that deals with the measurement and representation of the Earth, and it all started when a clever human named Eratosthenes discovered that you could measure the circumference of the Earth by looking down a...

Observing occultations from Earth is one of the tools scientists have for gathering precise information about the size and shape of Lucy’s target destinations, known as “Trojan” asteroids.



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For the past 31 years, the Hubble Space Telescope has continued its important mission of uncovering the mysteries of the universe. One of those mysteries that Hubble has helped us begin to...

Seventy-five years ago, astronomer Lyman Spitzer envisioned a future for space exploration that deepened humanity’s curiosity about the cosmos. A visionary behind the Hubble Space Telescope, Spitzer was among the...

From an Earth-based perspective, Mercury passes between our planet and the sun only about 13 times a century. May 9, 2016, will be the last opportunity to see the event, known as a transit, until 2019.



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On October 18th, 2013 the Lunar Laser Communication Demonstration (LLCD) made history, transmitting data from lunar orbit to Earth at a rate of 622 Mbps. LLCD, flying aboard NASA's Lunar Atmosphere and Dust Environment Explorer (LADEE),...

Jared Espley talks about the close encounter between Mars and Comet Siding Spring at the Oct 17, 2014 liveshot. This is a canned interview.<b<b<br/>r/>r/>

In this video, we'll be installing TLS certificate of intermediate CA.
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This clip is from the chapter "Getting and Installing a Custom Certificate" of the series "SSL Complete Guide 2021: HTTP to HTTPS".In this section,...

People have been looking at outer space through telescopes since the time of Galileo. Learn how telescopes work and how they have expanded what we know about our solar system.

Learn all about quasars, extremely bright objects in outer space powered by black holes. This video explains how they were discovered, their connection to supermassive black holes, and their significance in understanding the early...

The video discusses the exploration of outer planets, particularly Jupiter, through the use of powerful telescopes and spacecrafts. It highlights the contributions of early scientists like Galileo and the advancements in technology that...

Once you’ve gotten the hang of basic black holes, you might want to search for some fancier ones. That’s great! But, before you do, refer to this convenient chapter to learn just how fancy some black holes can...

This live-action video program is about the word Comet. The program is designed to reinforce and support a student's comprehension and retention of the word Comet through use of video footage, photographs, diagrams and colorful, animated...

Citizen scientists using the NASA-sponsored website DiskDetective.org have logged 1 million classifications of potential debris disks and disks surrounding young stellar objects (YSO). This data will help provide a crucial set...

There is no age restriction on the chance to make a significant contribution to our understanding of the universe. Caroline Moore, a 14-year-old from Warwick, N.Y., has made such a mark on astronomy with the discovery of Supernova...

This video provides a basic understanding of lenses, explaining how they work to focus light and form images. It covers the different types of lenses, their uses in various devices, and even highlights how our own eyes function as...

In this video the focus is on where and why concave mirrors are used, as well as the image formation and types of images. Students will learn that concave mirrors are used in many ways to magnify objects, create real and virtual images...

The James Webb Space Telescope will explore every phase of cosmic history: from the formation of the very first galaxies in the early universe, to our cosmic backyard of the Solar System. Webb is the largest space telescope NASA has ever...

VLBI, or Very Long Baseline Interferometry, is a technique that uses multiple radio telescopes to very precisely measure the Earth's orientation. It was originally invented back in the 1960s to take better pictures of quasars, but...

Our solar system is full of incredible objects, and some of them are manmade! Beyond the probes we've sent to observe other planets, we've put countless objects up into orbit to perform a variety of functions. What are these, where are...

Exploring the mysteries of dark energy and black holes. Identifying exoplanets. Capturing the origins of galaxies. Just some of what's happening at ground-based observatories -- windows on the universe that allow researchers to gaze...

In a wafer, what are the limits to glass and what is a possible solution?<br/>
Magical Glass Technology, Part 2

Upon viewing the Stars and Galaxies video series, students will be able to do the following: Explain that our solar system is part of the Milky Way galaxy. Understand that the Milky Way galaxy is huge and contains billions of stars....

Do you want to learn about space stuff? Do you want understand stars and galaxies, black holes and quasars, dark matter and all the rest? This is the playlist for you! We will start at the beginning of the universe, and get all the way...