Posts by 

EarthSky Voices

This dead star is still shredding its planetary system

Astronomers have discovered a dead star is still shredding the remains of its ancient planetary system. The metallic debris is spiraling onto the white dwarf.

Covid vaccine could help cancer patients fight tumors

A new study has found that the Covid vaccine stimulated the immune system of cancer patients to attack tumors. Read more about this encouraging research.

Here’s where popular witch icons originated

Witch icons like black hats, cauldrons, broomsticks and black cats stem from medieval fears and still haunt Halloween and pop culture today.

Reflect Orbital says it will deliver sunlight on demand

The startup company Reflect Orbital has proposed putting hundreds of thousands of satellites with mirrors in space to illuminate areas of Earth at night.

Dancing dust devils on Mars trace raging winds

Using data from several Mars missions, scientists have put together a catalog of dust devils on Mars that help track winds and troublesome dust.

Webb glimpses doomed star before its explosion

For decades, astronomers have wanted to know exactly what the explosion of a doomed star looks like. The Webb Space Telescope has made that knowledge possible.

Mars missions image Comet 3I/ATLAS during red planet flyby

Spacecraft around Mars have caught images of interstellar comet 3I/ATLAS as it made a close pass past the red planet. See the images here.

Moon-forming disk found around massive planet

Data from the Webb space telescope reveal that a massive planet around a distant star is encircled by a moon-forming disk.
Space

Rogue planet found growing at astonishing record rate

Astronomers have discovered a rogue planet eating up 6 billion tons of gas and dust every second. That's the fastest rate ever recorded for any planet.

Why don’t evergreen trees change color and drop their leaves?

As temperatures drop, broad-leafed deciduous trees withdraw green chlorophyll from their leaves and turn colors. Evergreens solve the problem a different way.