Space, Earth, nature and engineering. Since 1995.

The science of discovery

Space, Earth, nature and engineering. Since 1995.

Universe

Hubble steers without thrusters using spinning wheels and Earth's magnetic field

Hubble turns by trading angular momentum with four internal reaction wheels, then uses magnetic torquer bars to unload the momentum those wheels accumulate.

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  1. Science & Engineering

    NASA's first communications satellite was just a giant reflective balloon

  2. Human Factors

    US dumped 47,800 containers of radioactive waste off San Francisco

  3. Science & Engineering

    NASA engineer's chip design prediction conquered imaging, now ships in billions yearly

  4. Earth & Life

    Earth's center of mass wanders millimetres each year with seasonal shifts

  5. Science & Engineering

    Webb finds a Jupiter-sized object that formed like a star, not a planet

  6. Science & Engineering

    Pulsar's backward-spinning disk may have flipped to forward in 2008

  7. Science & Engineering

    Earliest outer planets formed mostly from heat-forged rock, not icy dust

  8. Space & Missions

    NASA's Roman telescope uses 18 kg of budgeted 200, doubling its expected mission length

Space Daily

The science of space, Earth, nature and engineering.

Space Daily explains the missions and technologies carrying exploration forward, the universe revealed by observation, the systems shaping Earth and life, and the engineering that makes discovery possible.

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