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Hubble has caught a tiny comet slowing its spin and then reversing direction entirely.
Top 15 Space & Astronomy Stories
- Nearby Rocky Worlds for Life Search: 26 March 2026 • Universe Today
- SMILE Mission Pre-Launch Briefing: 26 March 2026 • European Space Agency
- New Hubble Constant Measurement Using Gravitational Waves: 26 March 2026 • Universe Today
- NASA Hubble Detects Comet Spin Reversal: 26 March 2026 • NASA
- Webb and Hubble Team Up on Saturn: 26 March 2026 • Space.com
- Mystery of Gamma Cassiopeiae Solved: 26 March 2026 • Universe Today
- How Venus Became a Hellscape: 26 March 2026 • Universe Today
- 45 Potentially Habitable Exoplanets Catalogued: 26 March 2026 • Space.com
- 100 New Exoplanets Found in TESS Data: 25 March 2026 • Space.com
- Direct Confirmation of Two Baby Planets: 25 March 2026 • Universe Today
- Future of Space Stations Part II: 25 March 2026 • Universe Today
- NASA Sets Artemis II Coverage Plans: 25 March 2026 • NASA
- Artemis Moon Tree Dedicated: 25 March 2026 • NASA
- NASA Names Acting Launch Services Manager: 25 March 2026 • NASA
A new paper in Monthly Notices of the Royal Astronomical Society has identified 45 rocky exoplanets with potential for life out of the 6,281 currently known. These nearby candidates could become prime targets for future observations seeking signs of biology.
Source: universetoday.com
ESA and the Chinese Academy of Sciences held a media briefing covering final details before the SMILE spacecraft launches on a Vega-C rocket from French Guiana. The joint mission will study how solar wind interacts with Earth’s magnetic field.
Source: esa.int
A fresh study has used ripples in spacetime to produce a new value for the Hubble constant, the rate at which the universe is expanding. This approach may help settle one of cosmology’s longest-running disagreements.
Source: universetoday.com
Astronomers using Hubble have found the first evidence of a small comet whose spin slowed and then reversed direction due to volatile activity. This offers a dramatic look at how outgassing can reshape small bodies in the solar system.
Source: science.nasa.gov
Combined observations from the James Webb and Hubble space telescopes have produced the most detailed view yet of Saturn’s atmosphere and rings. The images reveal new details about the planet’s dynamic weather and ring structure.
Source: space.com
After fifty years of unexplained high-energy X-rays, observations with a next-generation space telescope have shown that Gamma Cas is being fed by an invisible companion star. The bright star in the distinctive W of Cassiopeia is now understood as a binary system.
Source: universetoday.com
A new study ran 234,000 simulations of Venus’s 4.5-billion-year evolution to explore why it diverged so sharply from Earth. The results point to four possible pathways that turned our neighbour into the extreme world we see today.
Source: universetoday.com
Astronomers have released a new catalog of 45 exoplanets that stand out as promising places to search for alien life. The list provides a focused framework for upcoming telescope observations.
Source: space.com
An innovative AI program has uncovered an additional 100 worlds hidden in data from NASA’s TESS spacecraft. The haul expands our catalogue of planets beyond our solar system.
Source: space.com
Using ESO telescopes, astronomers have directly confirmed two planets forming in the disc around the young Sun-like star WISPIT 2 through spectroscopy. The system’s structure suggests it may mirror aspects of our own solar system’s early days.
Source: universetoday.com
As the ISS heads toward retirement in 2030, several commercial proposals are advancing, including Airbus’s Loop habitat with a centrifuge and greenhouse. These designs represent diverse approaches to sustaining human presence in orbit.
Source: universetoday.com
NASA has detailed its live coverage plans for the Artemis II crewed flight test around the Moon, targeting launch no earlier than 6:24 p.m. EDT on April 1. The mission will send astronauts beyond low Earth orbit for the first time in over fifty years.
Source: nasa.gov
A loblolly pine grown from seeds that flew around the Moon has been dedicated at Mary W. Jackson Elementary School in Hampton, Virginia. The tree honours the legacy of NASA’s first Black female engineer.
Source: science.nasa.gov
Jennifer Lyons has been selected as acting program manager for NASA’s Launch Services Program at Kennedy Space Center, effective April 1. She will oversee acquisition of commercial launch vehicles for science and robotic missions.
Source: nasa.gov
Cosmic Spotlight
NASA Hubble Detects Comet Spin Reversal
Astronomers pointed Hubble at a small comet and watched something remarkable: its rotation gradually slowed, stopped, and then began turning the other way. The cause is volatile ices turning to gas and shooting out like tiny thrusters, torquing the nucleus in unpredictable ways. This is the first time we’ve caught the full reversal in action, giving us a real-time glimpse of how comets physically evolve. The observation shows these small bodies are far more dynamic than we once thought. What will we find when we watch more of them over long periods?
Cosmic Deep Dive: Measuring the Universe's Expansion
If you stretched the observable universe to the size of Canada, the difference between competing measurements of its expansion rate would equal the distance between Toronto and Ottawa. The Hubble constant tells us how fast space itself is growing, yet two main ways of calculating it keep giving stubbornly different answers. One method uses the cosmic microwave background from the early universe, while the other relies on nearby supernovae and galaxies whose distances we can measure directly. Imagine trying to guess the speed of a river by looking at its source 13 billion years ago versus watching the water flow right beside you today. Gravitational waves from colliding neutron stars now offer a third, completely independent ruler that travels at the speed of light across billions of light-years without being bent by intervening matter. Each new technique seems to sharpen the mystery instead of solving it. We can measure the universe expanding in exquisite detail, yet we still don’t know why our two best numbers refuse to agree.
Today's edition is packed with fresh discoveries and missions that keep pushing our understanding further outward. Keep looking up.