• Dark energy isn’t constant after all: DESI’s 3‑year survey of nearly 15 million galaxies hints that the mysterious energy accelerating cosmic expansion is weakening with time . The data show the influence of dark energy may be decaying , suggesting the universe’s fate might be very different from the eternal acceleration once predicted

• A baby planet caught in the act: Using the MagAO‑X adaptive optics system, astronomers captured the first clear image of WISPIT 2b—a five‑Jupiter‑mass protoplanet embedded in the dark gap of a multi‑ringed disk . The purple dot shows hydrogen gas raining onto the growing world ; this discovery resolves long‑standing doubts about planets carving these gaps and provides a glimpse of how our own Jupiter might have looked 4.5 billion years ago

• Enceladus’ plumes hide complex chemistry: A fresh look at Cassini’s fastest flyby (E5) found “younger” ice grains that exposed aromatic molecules and advanced organics like esters and ethers . These molecules, produced by hydrothermal vents, suggest Saturn’s moon can synthesize precursors to amino acids and lipids —raising Enceladus’s astrobiological allure.

• Venus’s clouds are surprisingly watery: Re‑analyzed mass spectrometry data from NASA’s 1978 Pioneer probe show that Venus’s cloud aerosols are about 62 % water bound in hydrates , with sulfuric acid making up only ~22 % . Hydrated ferric sulfate and magnesium sulfate dominate the mix , challenging long‑held views of an exclusively acidic atmosphere and re‑opening debates about potential cloudborne life.

• Spiral arms reveal how distant giants form: ALMA observations of the protoplanetary disk around IM Lupi show its spiral arms rotate at Keplerian speeds . This motion proves the disk is gravitationally unstable, not sculpted by hidden planets, and supports a scenario where giant planets can form far from their stars —solving the mystery of systems like HR 8799 that host massive worlds at tens of AU

• A rogue planet’s feeding frenzy blurs the star/planet line: Cha 1107‑7626, a free‑floating world 620 light‑years away, underwent a dramatic accretion burst—devouring six billion tonnes of gas per second, eight times its prior rate . With a mass of five–ten Jupiters and magnetically driven infall , the burst shows that some rogue planets form like stars and even display transient water vapour signatures during these events

• The Moon could help unveil dark matter: Simulations show that faint 21‑cm radio signals from the cosmic Dark Ages encode the mass of dark‑matter particles . Earth’s ionosphere and radio noise make the signal undetectable, but the far side of the Moon offers a radio‑quiet haven . With renewed international interest in lunar radio observatories , future missions may turn our nearest neighbor into a portal for probing the universe’s invisible matter.

• Artemis II edges toward launch: NASA’s first crewed lunar mission in over 50 years could fly as early as February 2026 . The 10‑day flight will send four astronauts—commander Reid Wiseman, pilot Victor Glover, mission specialist Christina Koch and Canadian Jeremy Hansen—on a free‑return loop around the Moon . Koch will be the first woman and Glover the first Black astronaut to fly this deep into space , paving the way for a sustainable lunar presence and eventual Mars voyages .

• Heartbeat of a newborn magnetar: Re‑examination of gamma‑ray burst GRB 230307A uncovered a 909‑Hz periodic signal lasting just 160 ms . This heartbeat indicates that the burst was powered by a rapidly spinning millisecond magnetar, not a black hole . The finding links gamma‑ray bursts to magnetars and offers a new handle on the physics of compact stars under extreme conditions .

• Opening the milli‑hertz frontier for gravitational waves: Researchers have proposed a compact detector that uses ultrastable optical cavities and atomic clock technology to sense gravitational waves in the elusive 10⁻⁵–1 Hz band . Unlike LIGO’s kilometre‑scale interferometers, these table‑top devices could form a global network , enabling detection of signals from white‑dwarf binaries and early‑universe phenomena years before space‑based missions like LISA