The new frontier of exploration.
Mars Daily

People who keep old birthday cards, faded ticket stubs, and handwritten notes in a drawer they rarely open aren't sentimental hoarders, they're keeping proof that certain moments actually happened

Decluttering advice treats sentimental drawers as clutter, but psychology suggests those saved cards, stubs, and notes are doing quiet cognitive work — anchoring memory, stabilising identity across time, and providing evidence that certain moments actually happened.

Latest

All articles →
Terradaily

Terra reached its final Earth orbit on 24 February 2000 after 11 weeks of checkout and eight ascent burns, and mission scientists stopped nudging its inclination back in 2020, letting the satellite quietly drift out of its contained orbit as retirement approaches

Terra reached its designed orbit on 24 February 2000 after 11 weeks of checkout and eight ascent burns. In 2020 the flight team stopped fighting the drift. NASA now projects end-of-science in February 2027.

Physics News

We tend to picture glass as a slow-moving liquid because old cathedral windows are thicker at the bottom, but physicists have shown the sag is a manufacturing artefact of medieval glassmakers, and room-temperature glass would need timescales far longer than the age of the universe to flow

Old cathedral windows really are thicker at the bottom, but the sag comes from medieval glassmaking, not centuries of slow flow. Actual room-temperature glass would need more than the age of the universe to move at all.

Outer Planets

In 1610, Galileo turned a homemade telescope toward Jupiter and sketched four points of light that seemed to shift positions each night, and within a week he realised he was watching moons orbit another world — the first direct evidence that not everything circled Earth

On January 7, 1610, Galileo pointed a homemade 20x telescope at Jupiter and sketched four dots that rearranged themselves nightly — the first proof that worlds could orbit something other than Earth, and the observation that cracked open the Aristotelian cosmos.

What’s up in

Mars Daily

Mars missions, rover discoveries, planetary science, exploration technology, and the people, agencies, and companies shaping humanity's next destination.

About Mars Daily

The new frontier of exploration.

Mars Daily is an independent publication covering Mars missions, planetary science, rover discoveries, exploration technology, and the engineering behind every mission to the Red Planet. The site pairs a deep archive with current reporting on the research, agencies, companies, policy shifts, and technical breakthroughs shaping humanity's next destination. We employ modern AI technologies to support our editorial workflows; every published piece is editorially directed and reviewed.

More about us →