New Discoveries

What's new in the universe — real findings, in plain language, newest first. Every entry says what was found, who found it, and whether it is settled or still open. A claim is never written up as a discovery until the evidence earns it, and when the evidence is only a hint, this page says so.

November 2026 — Water ice on a visitor from another star

On July 1, 2025, a survey telescope in Chile spotted an object moving far too fast to belong to our solar system. It was 3I/ATLAS — only the third object from another star ever seen passing through ours, after 'Oumuamua in 2017 and Borisov in 2019. It came in from the direction of Sagittarius at about 61 kilometres per second, roughly 140,000 miles per hour, swung closest to the Sun on October 29, 2025, and passed Earth at about 1.8 times our distance from the Sun — never a threat, never coming back.

Webb watched it three times as it came and went, and the result came out in November 2026: the comet carries water ice, but mixed into tiny grains of dark dust — ice that looks more like the frozen rubble at the far edge of our own solar system than like the ice in the comets we know. The visitor is likely older than seven billion years. Every interstellar visitor is a free sample of another star system's building material, and this one arrived carrying its own.

Source: 3I/ATLAS — Webb's ice measurements, Protopapa and others, The Astrophysical Journal Letters, 2026.

May 2025 — The farthest galaxy ever seen

Webb found a galaxy whose light set out just 280 million years after the Big Bang and spent about 13.5 billion years reaching us. It is called MoM-z14, and its redshift — the measure of how far the universe's expansion has stretched its light — is 14.44, the largest ever confirmed. The galaxy itself is tiny, only about 240 light-years across, roughly one percent the size of the Milky Way, and holds about a hundred million suns' worth of stars. Yet it shines bright enough to be picked out at the edge of the observable universe.

That brightness is the puzzle. The old picture said galaxies this early should be small and faint, growing slowly. Webb keeps finding bright ones instead, so the picture of how galaxies formed has to change. MoM-z14 beat the previous record holder, JADES-GS-z14-0, and its distance was confirmed by five separate fingerprints in its light, not just one.

Source: MoM-z14 — Naidu and others, "A Cosmic Miracle," The Open Journal of Astrophysics, January 2026.

April 2025 — Dark energy might be weakening

For nearly thirty years, the accelerating expansion of the universe has been blamed on dark energy — and dark energy has been assumed to be a fixed number, the same at every time and place. The Dark Energy Spectroscopic Instrument, DESI, mapped more than 14 million galaxies and quasars, measuring distances back more than ten billion years. When its measurements are combined with the microwave background and exploding stars, the data prefer a dark energy that changes over time, growing weaker as the universe ages.

That is a hint, not a finding. The preference runs from about 2.8 to 4.2 standard deviations depending on which exploding-star data you use — and physics demands five before it calls something found. DESI's own measurements, taken alone, still fit a plain unchanging dark energy. If the weakening is real, the fate of the universe changes with it. If it is a statistical fluke, it will fade as more data arrives. Either way, this is the question to watch.

Source: DESI Data Release 2 — Abdul-Karim and others, 2025.