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The latest space discoveries, astronomical observations and science stories from Unseen Sky.

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ESO visible-light image showing the glowing rings of the Helix Nebula, NGC 7293.

OBSERVATIONS · November 2, 2026

Helix Nebula: A Glimpse of the Sun's Fate

Hubble Space Telescope image of interstellar comet 3I/ATLAS surrounded by a blue-tinted coma, with streaked background stars.

DISCOVERIES · November 2, 2026

3I/ATLAS: Older Than the Sun?

NASA simulation of a supermassive black hole showing gravitational lensing and a glowing accretion disk

ASTROPHYSICS · October 31, 2026

You Could Fall Into a Black Hole and Not Even Notice

The Moon completely covering the Sun during a total solar eclipse, revealing the solar corona

SOLAR SYSTEM · October 31, 2026

One Day, Earth Will Have Its Last Total Solar Eclipse

NASA Solar Dynamics Observatory image revealing the Sun's glowing plasma and magnetic activity

ASTROPHYSICS · October 31, 2026

The Sun Is Not on Fire. So What Makes It Shine?

Discovery observations of dwarf planet candidate 2026 ED138 captured by Rubin Observatory

DISCOVERIES · October 31, 2026

A New World Beyond Pluto? Meet 2026 ED138

A 4.1-Billion-Year-Old Martian Meteorite Reveals Ancient Water

DISCOVERIES · October 31, 2026

A 4.1-Billion-Year-Old Martian Meteorite Reveals Ancient Water