Ground-Based Lasers Could Push Space Debris off Collision-Course Orbits

Ground-Based Lasers Could Push Space Debris off Collision-Course Orbits Researchers at the Australian National University (ANU) are finding new uses for the laser-based technology that sharpens telescope imagery – called adaptive optics – and it just might help mitigate the world’s growing space debris problem. Purpose-built lasers could give derelict satellites a slight ‘push’ of […]

Galileo Sunspot Sketches Versus Modern ‘Deep Learning’ AI

Galileo Sunspot Sketches Versus Modern ‘Deep Learning’ AI A new study turns modern ‘deep learning’ techniques on Galileo’s early sketches of the Sun. It’s a fascinating thought to consider. What exactly did the Sun look like, centuries ago? What would we see, if astronomers back in the time of Kepler and Galileo had modern technology […]

Gaia Finds 12 Examples of Einstein Crosses; Galaxies Being Gravitationally Lensed so we see Them Repeated 4 Times

Gaia Finds 12 Examples of Einstein Crosses; Galaxies Being Gravitationally Lensed so we see Them Repeated 4 Times In 1915, Einstein put the finishing touches on his Theory of General Relativity (GR), a revolutionary new hypothesis that described gravity as a geometric property of space and time. This theory remains the accepted description of gravitation […]

Brown Dwarfs can Spin so Fast They Almost Tear Themselves Apart

Brown Dwarfs can Spin so Fast They Almost Tear Themselves Apart We tend to image planets as spheres. Held together by gravity, the material of a planet compresses and shifts until gravity and pressure reach a balance point known as hydrostatic equilibrium. Hydrostatic equilibrium is one of the defining characteristics of a planet. If a […]

What Would Raindrops be Like on Other Worlds?

What Would Raindrops be Like on Other Worlds? Precipitation is much more widespread throughout that solar system than commonly assumed.  Obviously it rains water on Earth.  But it snows carbon dioxide on Mars, rains methane on Titan, sulfuric acid on Venus, and could potentially rain diamonds on Neptune.  The type of material falling out of […]