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A Chartreuse White Dwarf Shows Some Stars Really Are Green

21 October 2026 at 13:00

The stars in our galaxy come in a beautiful assortment of colors. We see supergiants such as Betelgeuse that have a warm red glow, and others like Rigel that shine […]

The post A Chartreuse White Dwarf Shows Some Stars Really Are Green appeared first on Sky & Telescope.

Japan Launches the Martian Moons Exploration Mission

20 October 2026 at 03:01

A two-stage, H3-24L rocket lit up the predawn skies over Tanegashima Space Center on the southern tip of Japan early on Tuesday, October 20th (3:41 p.m. EDT on October 19th), […]

The post Japan Launches the Martian Moons Exploration Mission appeared first on Sky & Telescope.

Webb and Spitzer Telescopes Explore the Planets That Never Were

19 October 2026 at 13:00

Planetesimal wrecks are raging around distant stars. With the Webb and Spitzer Space Telescopes, astronomers are learning what that looks like.

The post Webb and Spitzer Telescopes Explore the Planets That Never Were appeared first on Sky & Telescope.

Chile’s Light-Pollution Standard Takes Full Effect

16 October 2026 at 19:35

The South American country, which hosts some of the world’s major astronomical observatories, promises to protect its night skies, from the Atacama Desert to Tierra del Fuego.

The post Chile’s Light-Pollution Standard Takes Full Effect appeared first on Sky & Telescope.

A Cloud Forms Spontaneously Over a Mountain on Mars β€” Here’s Why

15 October 2026 at 19:25

This curious cloud requires no solid particles to seed its formation β€” a theoretical phenomenon that's never been observed until now.

The post A Cloud Forms Spontaneously Over a Mountain on Mars β€” Here’s Why appeared first on Sky & Telescope.

Meet the Star Cluster That Defies Conventions

9 October 2026 at 09:00

The stellar gathering known as Garro 04 belongs to a growing number of enigmatic groupings that combine traits of young open clusters ancient globulars.

The post Meet the Star Cluster That Defies Conventions appeared first on Sky & Telescope.

Fast Radio Burst Shatters Distance Record

8 October 2026 at 19:00

Astronomers have found a distant fast radio burst whose signal has traversed much of the universe before arriving at Earth.

The post Fast Radio Burst Shatters Distance Record appeared first on Sky & Telescope.

The Helix Nebula is Hurling Clumps of Gas through Space

12 August 2026 at 16:00

The star at the heart of the oft-observed Helix Nebula powered a clumpy wind before it died. Now, new images capture these clumps’ dissolution into the space between stars.

The post The Helix Nebula is Hurling Clumps of Gas through Space appeared first on Sky & Telescope.

This Week's Sky at a Glance, August 7 – 16

7 August 2026 at 15:17

In twilight, watch bold Venus and tiny Spica approach each other to meet September 1st. And check whether you'll be able to see anything of Wednesday's solar eclipse!

The post This Week's Sky at a Glance, August 7 – 16 appeared first on Sky & Telescope.

Inouye Solar Telescope Sees the Sun Closer Than Ever

5 August 2026 at 16:01

Scientists observing the Sun with the Daniel K. Inouye Solar Telescope have caught a wave-like shape that's never been seen on the Sun's visible surface.

The post Inouye Solar Telescope Sees the Sun Closer Than Ever appeared first on Sky & Telescope.

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