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Our Universe - Delta College Public Radio
- 68 - Light Pollution: How Many Stars in the Night Sky?
How many stars can you see with the naked eye at night? 40 or 50 thousand? Or is it 100,000 stars? Have you ever tried to count? Well, a few astronomers have counted, and the number is pretty… disappointing.
Fri, 25 Oct 2024 - 04min - 67 - Quantum Computing
Computers, tablets, and phones have become very fast. The latest multicore processors are capable of an incredible number of calculations each and every second. Yet, we are changing the way we do computing thanks to our ever-increasing knowledge in the field of quantum physics. How does quantum computing work, and are quantum computers faster than classical computers?
Thu, 10 Oct 2024 - 04min - 66 - How Magnetism Works
Let’s study the mystery of magnetism, exploring the tiny particles and invisible fields that govern this powerful interaction.
Thu, 27 Jun 2024 - 04min - 65 - How Venus Lost Its Water
Ages ago, Venus may have had oceans of water and been much more like Earth. Where did all the water on Venus go? And why is it such a hellscape today?
Thu, 27 Jun 2024 - 04min - 64 - The Physics of Polarizing Sunglasses
Have you ever squinted at a shimmering lake or felt blinded by the reflection off a wet road? That's glare, and it's not just uncomfortable – it can make it difficult to see clearly.
Thu, 02 May 2024 - 03min - 63 - Your Best Chance to See a Nova
A nova called T Coronae Borealis erupts every 80 years and your only chance to see it is sometime between right now and September of 2024.
Mon, 08 Apr 2024 - 03min - 62 - NASA’s Deep Space Optical Communications Experiment
Imagine sending massive amounts of data from our spacecraft and receiving high-res video in minutes, not hours or days. It might sound like science fiction, but that's the reality NASA's Deep Space Optical Communications Demo, or DSOC, is aiming for.
Thu, 29 Feb 2024 - 04min - 61 - The Radio Spectrum
The radio spectrum is a fascinating realm of invisible energy carrying everything from your favorite radio station to your Wi-Fi connection and beyond. So how does it work?
Thu, 01 Feb 2024 - 03min - 60 - The Acceleration Due to Gravity
We’ve all heard this number before – 9.8 m/s² – But what does that really tell us? And what does it have to do with our weight?
Fri, 26 Jan 2024 - 03min - 59 - The Mariner Valley of Mars
Mars is a world of towering mountains, vast plains, and deep canyons. Today, we're going to take a look at one of the most remarkable features on Mars: Valles Marineris or… the Mariner Valley.
Fri, 26 Jan 2024 - 03min - 58 - The Most Promising Dark Matter Experiment
Most of the universe is made of a type of matter that doesn’t interact with light—dark matter. This is a big deal—throughout history we’ve studied and learned about the universe by observing it, yet we can’t directly observe most of the universe!
Fri, 19 Jan 2024 - 04min - 57 - The Elusive Oxygen-28
Physicists have finally detected the elusive oxygen-28 isotope, but the observations are surprising and unexpected.
Fri, 13 Oct 2023 - 03min - 56 - Nuclear Fission Reactors
In 1942, a team working on the Manhattan Project were the first scientists to build a nuclear fission reactor, but it was only the first *man-made* fission reactor on Earth.
Fri, 06 Oct 2023 - 04min - 55 - Exoplanets
How many planets do we know of outside of our own Solar System? Are any of these planets habitable? How do we even find them?
Fri, 05 May 2023 - 03min - 54 - Jupiter’s Moon, Io
There is a moon in our Solar System that is considered to be the most volcanically active world that we know of. This Moon is one of Jupiter’s 90+ known moons, and is called Io.
Fri, 28 Apr 2023 - 03min - 53 - The Carrington EventMon, 27 Mar 2023 - 04min
- 52 - The Basics About Our Moon
Every now and then the news picks up on something interesting going on with the Moon. We often hear about a supermoon, or a harvest Moon, or my personal favorite the Super Blood Wolf Moon! Let’s dive into what all these terms mean.
Mon, 06 Feb 2023 - 03min - 51 - If Earth Had Two Suns
Earth orbits the Sun in the habitable zone – a place where liquid water can exist in great quantities on our surface. But how would things change if Earth revolved around two suns, and do we know of any real-life planets that orbit more than one star?
Thu, 26 Jan 2023 - 04min - 50 - The Doppler Effect
Have you ever noticed how the siren of an ambulance sounds higher in pitch when it’s approaching, and lower when it’s driving away from you? That shift in pitch is related to the Doppler effect – an observed change in the length of a wave due to relative motion between the source and the observer.
Fri, 16 Dec 2022 - 04min - 49 - NASA’s Double Asteroid Redirection Test (DART)
In September of 2022 NASA conducted the world’s first planetary defense technology demonstration. NASA’s Double Asteroid Redirection Test demonstrated asteroid deflection by changing an asteroid’s motion in space through kinetic impact.
Fri, 09 Dec 2022 - 03min - 48 - The Strong Force
There are four fundamental forces that govern every interaction that happens in the universe and the strong nuclear force is responsible for keeping the nucleus of an atom together.
Thu, 06 Oct 2022 - 04min - 47 - Starlink and Space Junk
Never before in Earth’s history have we seen such a dramatic increase in the number of artificial satellites, and potential future debris, in orbit around the planet.
Thu, 06 Oct 2022 - 04min - 46 - The Power of Lasers
Whether or not you realize it, many things you do in your day-to-day life rely on laser technology. Let’s go through how lasers works and some potential applications.
Mon, 26 Sep 2022 - 04min - 45 - How Long Do Stars Live?
What determines how long a star like our Sun lives? It’s been around about four and a half billion years, so why hasn’t it burned out yet? Also, what about all the other stars in our galaxy? How long will they live? Let’s take a look at the lifecycle and lifespan of these celestial powerhouses.
Thu, 18 Aug 2022 - 04min - 44 - Our Place in the Universe
The universe is vast, and our place in the universe has been the subject of a large amount of research. Let’s take a close look at Earth’s place in the universe.
Tue, 09 Aug 2022 - 04min - 43 - How Practical is Solar Energy?
How practical is solar energy and putting solar panels up on your roof? What exactly will that accomplish for the environment and for your finances? Today, we’re going to look at the practical aspects of powering your home and community with solar.
Thu, 28 Jul 2022 - 04min - 42 - Extreme Temperatures of the Solar System
Earth has a pretty large range of temperatures, but make no mistake about it, even with the extremes from Death Valley to the South Pole, it’s still mild here compared to any other world.
Tue, 19 Jul 2022 - 04min - 41 - All About Telescopes
To take a closer look at the wonderous nature of the night sky, you may have considered getting a telescope at some point. Today, we look at different telescope types and a couple potential ways to see deeper into the universe.
Thu, 23 Jun 2022 - 04min - 40 - Measuring the Vast Distance to a Star
Stars are so ridiculously distant that it’s hard to understand just how far-off they are. But how do we know, really, how far away stars are?
Mon, 13 Jun 2022 - 04min - 39 - A Planet Far, Far Away
How may planets do we know of outside of our solar system… beyond the influence of our Sun? When a planet is found to orbit a star other than the Sun, it is called an exoplanet. Currently, there are around 5,000 known exoplanets.
Thu, 02 Jun 2022 - 04min - 38 - The James Webb Space Telescope
While the Hubble Space Telescope continues to operate, NASA, The European Space Agency, and the Canadian Space Agency have collaborated to build, launch, and successfully deploy the most powerful and complex space telescope ever built.
Thu, 21 Apr 2022 - 04min - 37 - Why Polaris is Special
There are a few misconceptions and many mesmerizing details about the nature of Polaris, also known as the North Star.
Thu, 21 Apr 2022 - 03min - 36 - The Speed Limit of the Universe
We think of the speed of light as almost instantaneous, but compared to the vastness of space, light is slow.
Thu, 03 Mar 2022 - 04min - 35 - Nuclear Fusion
Every day, the Earth receives enough energy from the Sun to meet our energy needs for a year, thanks to nuclear fusion.
Mon, 30 Sep 2019 - 04min - 34 - Space Debris
The night sky is likely to get a lot more dynamic in the coming years because of companies looking to get into the space Internet business.
Mon, 30 Sep 2019 - 04min - 33 - How We Got Our Moon
Earth has one of the largest moons in the Solar System, even compared to the massive outer planets. How did Earth get such a massive moon?
Thu, 13 Jun 2019 - 03min - 32 - X-Rays and CT Scans
Learn the difference between these two tests, what they do, and what kind of exposure you get from them.
Thu, 13 Jun 2019 - 03min - 31 - Cell Phone Radiation
Explores the radio waves and microwaves that make our cell phones work and see how our cellular technology might affect us on a cellular level.
Mon, 18 Feb 2019 - 04min - 30 - Neutrinos
How do mysterious little particles with no electric charge and nearly zero mass shed light on the creation of the universe?
Fri, 01 Feb 2019 - 04min - 29 - AntimatterFri, 28 Sep 2018 - 04min
- 28 - Asteroid MiningMon, 24 Sep 2018 - 04min
- 27 - Milkdrameda
The irresistible force of gravity means that we're on an eventual collision course with our neighboring galaxies.
Mon, 04 Jun 2018 - 04min - 26 - Energy Production
How we generate our electricity and heat our homes affects everything from the environment to our wallets. So how do Michigan and the United States as a whole produce their energy?
Fri, 09 Mar 2018 - 04min - 25 - SpaceXThu, 01 Mar 2018 - 04min
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