If you are looking for new podcast material, you may want to check out NASA’s Curious Universe podcast. It has been around for a while, but it is starting a new series celebrating Earth from April 15 to May 13.
The first episode in the new Earth series is titled “How NASA Sees Our Blue Marble.” In the episode, we hear from Karen St. Germain, the director of NASA’s Earth Science Division. It is a chance to learn about the planet that NASA spends the most time studying.
If you like this series, you can go back and listen to other episodes, such as:
-“Inside the Team That Keeps Hubble Flying” (March 14, 2025) -“The Sun Series” (March 19 to May 3, 2024) -“Defending the Planet from Asteroids” (February 21, 2023) -“The Search For Life: Are We Alone?” (June 21, 2022)
Image (Credit): NASA’s SPHEREx and PUNCH satellites being prepared for launch inside the Astrotech Space Operations facility at Vandenberg Space Force Base in California, on Thursday, February 27, 2025. (NASA)
While NASA’s Spectro-Photometer for the History of the Universe, Epoch of Reionization and Ices Explorer (SPHEREx) and Polarimeter to Unify the Corona and Heliosphere (PUNCH) missions were expected to launch last weekend, they have been delayed until Thursday, March 6th. The launch will take place from the Vandenberg Space Force Base in California.
SPHEREx will spend two years collecting data on the origins of the universe by studying more than 450 million galaxies as well as more than 100 million stars in the Milky Way. You can learn more about the satellite’s mission by watching this Jet Propulsion Laboratory video.
PUNCH will be focused on events here in our own solar system. Consisting of four small satellites in low Earth orbit, the mission will study the entire inner heliosphere to learn how the Sun’s corona becomes the solar wind. You can learn more about the mission by watching this NASA video.
The European Space Agency (ESA) is ready to guide the ESA/NASA Solar Orbiter spacecraft through its closest encounter with Venus so far. Today’s flyby will be the first to significantly ‘tilt’ the spacecraft’s orbit and allow it to see the Sun’s polar regions, which cannot be seen from Earth. Studying the Sun’s poles will improve our understanding of solar activity, space weather, and the Sun-Earth connection.
Among the roughly 10 billion white dwarf stars in the Milky Way galaxy, a greater number than previously expected could provide a stellar environment hospitable to life-supporting exoplanets, according to astronomers at the University of California, Irvine. In a paper published recently in The Astrophysical Journal, a research team led by Aomawa Shields, UC Irvine associate professor of physics and astronomy, share the results of a study comparing the climates of exoplanets at two different stars. One is a hypothetical white dwarf that’s passed through much of its life cycle and is on a slow path to stellar death. The other subject is Kepler-62, a “main sequence” star at a similar phase in its evolution as our sun.
The space telescope Gaia has created the largest three-dimensional map of the Milky Way ever. On January 15, 2025, Gaia shut down after 11 years in space. But the research on data Gaia collected will continue for many years to come. Gaia is a space telescope onboard a satellite that has orbited the sun for 11 years. With the help of astrometry, which is a technique to measure the positions, distances and movements of stars and other heavenly bodies, Gaia has been able to measure distances and luminosities for up to 2 billion stars, which is about 1% of all stars in the Milky Way.
Image (Credit): Artist’s rendering of NASA’s Parker Solar Probe approaching the Sun. (NASA)
“Flying this close to the Sun is a historic moment in humanity’s first mission to a star…By studying the Sun up close, we can better understand its impacts throughout our solar system, including on the technology we use daily on Earth and in space, as well as learn about the workings of stars across the universe to aid in our search for habitable worlds beyond our home planet.”
–Statement by Nicky Fox, who leads the Science Mission Directorate at NASA Headquarters in Washington, in reference to NASA’s Parker Solar Probe recent flyby of the Sun.
NASA’s Parker Solar Probe is about to go where no spacecraft has gone before. A final flyby of Venus last month has sped up Parker for the mission’s next solar perihelion, set to occur on December 24 at 6:40 EST / 11:40 UT. At just 6.2 million km (3.9 million miles) from the solar surface — about nine times the Sun’s radius — this perihelion will be the closest for the mission. Parker is breaking its own record to once again become the closest human-made object to ever approach the Sun…the mission is totally autonomous in taking measurements; it should start transmitting data back to Earth within a week after this pass, though it has the capability to carry out operations on its own for up to two months if needed.
Astronomers have made a startling discovery. Using data from the eRosita X-ray instrument, researchers say they’ve discovered a “cosmic tunnel” that connects our solar system to other stars. Scientists have long known that our solar system exists in a Local Hot Bubble. This bubble is believed to have formed following several supernovas over the past several million years and is estimated to be around 300 light-years across. Using data from the eRosita, researchers from the Max Planck Institute say they found evidence of a cosmic tunnel stretching from our solar system out toward the Centaurus constellation. The tunnel appears to move through the material that makes up the Local Hot Bubble
Just as some children physically resemble their parents, many scientists have long thought that developing planets should resemble the swirling disk of gas and dust that births them. But, in a new study, a Northwestern University-led team of astrophysicists discovered the resemblance might be looser than previously thought. By studying a still-forming exoplanet and its surrounding natal disk using new instrumentation at W.M. Keck Observatory, the researchers uncovered a mismatched composition of gases in the planet’s atmosphere compared to gases within the disk. The surprising finding potentially confirms long-held skepticism that scientists’ current model of planet formation is too simplified.
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