Mercury, Venus, sample return, nuclear thermal propulsion, atmospheric sampling, space science, Caltech research, planetary evolution, MESSENGER, BepiColombo, DAVINCI, VERITAS, early solar system, planetary materials, Venus upper atmosphere, TRL, space exploration 2025

Cracking the Code of Mercury and Venus: NASA’s Next Big Sample Return Mission

April 16, 2025
A 2021 Lyrid meteor as seen from Oxfordshire, United Kingdom. Credit: Mary McIntyre.

Meteor Madness! How to See the Best Showers of Spring 2025

April 16, 2025
Stars at the center of the Small Magellanic Cloud. Credit: NASA/CXC/JPL-Caltech/STScI

Metal-Poor Stars Are Changing What We Know About the Cosmos

April 15, 2025
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This is an artist’s impression of a magnetar, which is a special type of neutron star with an incredibly strong magnetic field. Neutron stars are some of the most compact and extreme objects in the universe. These stars typically pack more than the mass of the sun into a sphere of neutrons about 12 miles across. The neutron star is depicted as a white-blueish sphere. The magnetic field is shown as filaments streaming out from its polar regions. Credit: ESA

SGR 0501+4516: Hubble Tracks the Galaxy’s Strangest Star Remnant

April 15, 2025
NASA’s James Webb Space Telescope’s observations of what is thought to be the first-ever recorded planetary engulfment event revealed a hot accretion disk surrounding the star, with an expanding cloud of cooler dust enveloping the scene. Webb also revealed that the star did not swell to swallow the planet, but the planet’s orbit actually slowly depreciated over time, as seen in this artist’s concept. Credit: NASA, ESA, CSA, R. Crawford (STScI)

JWST Catches a Star in the Act of Eating Its Own Planet

April 13, 2025
image credit: NASA

The Sun Just Leaked a Rare Element That Could Fuel the Future — Here’s What Happened

April 12, 2025
This NASA/ESA Hubble Space Telescope image features the planetary nebula Kohoutek 4-55. Credit: ESA/Hubble & NASA, K. Noll

Cosmic Farewell: Hubble Captures Stunning End of a Star’s Life

April 11, 2025
Stock image: Artist's illustration of a comet. Photo credit: iStock

The Sky’s New Visitor: How to See Comet SWAN Before It Vanishes

April 9, 2025
A digital illustration of the immense explosion of this double white dwarf binary star system, named WDJ181058.67+311940.94. In this picture, we capture the binary in the moment where the first white dwarf has just exploded, hurtling material towards its nearby companion which is on the cusp of explosion too. This event will occur in about 23 billion years, yet in only 4 seconds do both stars explode (Credit: University of Warwick/Mark Garlick)

A Type Ia Supernova is on the Way — and We Know Where It Will Happen

April 9, 2025
Nebula NGC 346 (Credit : ESA/Hubble)

Glowing Gas and Spiraling Stars: Hubble’s Stunning View of a Stellar Nursery

April 8, 2025
This image shows examples of galaxies in different shapes, all captured by Euclid during its first observations of the Deep Field areas. Credit: ESA/Euclid/Euclid Consortium/NASA, image processing by M. Walmsley, M. Huertas-Company, J.-C. Cuillandre

Space Just Got Deeper: What 26 Million Galaxies Tell Us About Dark Energy

April 8, 2025
By NASA / JPL / Space Science Institute - http://www.ciclops.org/view/5155/Saturn-Four-Years-On http://www.nasa.gov/images/content/365640main_PIA11141_full.jpg http://photojournal.jpl.nasa.gov/catalog/PIA11141, Public Domain

How to Spot Saturn’s Rare Ring Illusion in 2025 — It Won’t Happen Again Until 2039!

April 8, 2025
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