Comet ZTF is at its best this week — but every night moonlight encroaches on the scene until a later and later hour. Along the way, the Moon occults Mars for the southern U.S. and again forms isosceles triangles with naked-eyestars.
The post This Week's Sky at a Glance, January 27 – February 5 appeared first on Sky & Telescope.
A recently discovered asteroid will pass exceptionally close to Earth on January 26th. Here's how to see it.
The post Tiny Asteroid 2023 BU to Miss Earth appeared first on Sky & Telescope.
Astronomers at this month's big winter conference explored intriguing small galaxies at various points in cosmic history.
The post New Observations Reveal Galaxies Near and Far appeared first on Sky & Telescope.
Deep images of galaxy clusters reveals the light of wandering stars. What set these stars free from their hosts?
The post Hubble and Webb Image Galaxies’ Lost Stars appeared first on Sky & Telescope.
The James Webb Space Telescope has found the tiny tail of a close-in exoplanet that's losing its atmosphere.
The post JWST Investigates an Exoplanet "Corgi" appeared first on Sky & Telescope.
The average brightness of the night sky is increasing by 10% every year, making the stars less visible.
The post Light Pollution Is Increasing Even Faster Than We Realized appeared first on Sky & Telescope.
Venus and Saturn have a close conjunction in twilight. Comet ZTF heads into its best week or two. And Betelgeuse pulls ahead of Sirius ever earlier in the night.
The post This Week's Sky at a Glance, January 20 – 29 appeared first on Sky & Telescope.
If you have a solar filter, check out the sunspot group AR 3190 that's crossing the solar disk this week.
The post See a Giant Sunspot! appeared first on Sky & Telescope.
An arc that glows green thanks to doubly ionized oxygen appears near the Andromeda Galaxy in a photo obtained by amateur astronomers.
The post Amateur Astronomers Find Glowing Gas Arc Near Andromeda appeared first on Sky & Telescope.
Astronomers have discovered that one of the Milky Way’s nearest galactic neighbors has dramatically changed its looks in the recent past.
The post Familiar Fluffy Triangulum Galaxy Has Hidden, Two-Armed Pattern appeared first on Sky & Telescope.
Forget the hype and go outside to enjoy the real thing — a relatively bright comet you can see in binoculars from a dark sky.
The post Circumpolar Comet ZTF (C/2022 E3) is Here! appeared first on Sky & Telescope.
The James Webb Space Telescope has confirmed its first exoplanet, a rocky Earth-size planet, and attempted to take the measure of its atmosphere.
The post Webb Telescope Confirms Earth-size Exoplanet, Tries to Sniff Its Air appeared first on Sky & Telescope.
A supernova that skywatchers in the Far East observed almost 850 years ago has produced the most unusual remnant astronomers have ever found
The post Amateur Astronomer Discovers a Weird Supernova's Fireworks appeared first on Sky & Telescope.
A tiny binary system is not only small but also ancient, billions of years older than other such systems, which raises questions about its origins.
The post Astronomers Spot A Tiny Binary System appeared first on Sky & Telescope.
On Friday the 13th, Saturn is still well above bright Venus in twilight. Watch them close toward their conjunction on the 22nd. Jupiter and fading Mars shine high. Sirius sparkles below Orion, and the ascendant Big Dipper stands on its handle.
The post This Week's Sky at a Glance, January 13 – 21 appeared first on Sky & Telescope.
Astronomers have mapped the magnetic field along the "bubble" of gas 1,000 light-years wide around the Sun.
The post A 3D Magnetic Map of the Local Bubble appeared first on Sky & Telescope.
A red giant star thousands of light-years away "blinked," dimming significantly for seven long years, before returning to normal.
The post Astronomers Discover Giant Blinking Star appeared first on Sky & Telescope.
Mirfak, the brightest star in the constellation Perseus, is a yellow supergiant star with an uncertain fate.
The post Meet Mirfak, the Supergiant of Perseus appeared first on Sky & Telescope.
Images and spectra from the James Webb Space Telescope suggest that the first galaxies in the universe are too many or too bright compared to what astronomers expected.
The post The James Webb Space Telescope Is Finding Too Many Early Galaxies appeared first on Sky & Telescope.
Although no total lunar eclipses occur this year, skywatchers can look forward to two “central” solar eclipses — including an annular event in October whose path runs from Oregon through Texas.
The post Solar and Lunar Eclipses in 2023 appeared first on Sky & Telescope.
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