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May 28, 2026, 12:40 PM - 9 min read
Given the scale of interstellar distances, it’s inevitable that any alien voyage to Earth would span many years and possibly several centuries. But as the time spent in transit increases, so does the risk of catastrophic accidents or system malfunctions that could jeopardise the mission.
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April 29, 2026, 01:18 PM - 6 min read
Debates over the existence of extraterrestrials date back to the earliest Indigenous and western thought. The tools generating the evidence within western science, however, have changed — from the philosophical and theological arguments of the Ancient Greeks to the development of increasingly sophisticated telescopes and space travel and exploration.
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February 5, 2026, 01:20 PM - 6 min read
Planets larger than Earth but smaller than Neptune are the most common type of known exoplanet. It was for one of these planets, K2-18b, that a bold claim of a detection of a biosignature was made in 2025.
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April 25, 2025, 03:31 PM - 8 min read
The researchers found strong evidence of a chemical called dimethyl sulfide (DMS) in the planet’s atmosphere. On Earth, DMS is produced only by living organisms, so it appears to be a compelling sign of life, or “biosignature”.
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September 6, 2024, 09:29 AM - 6 min read
It’s hard to imagine, but there are organisms living in Earth’s lightless habitats, deep underground or at the bottom of the sea, that give us an idea what alien life without a circadian rhythm may be like.
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