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Deep-Sky Objects

Winter observing targets for small telescopes

Francis Halzen wins the 2026 Nobel Prize in physics

Uncovering M96’s violent past

Annotated astrophotograph of the Triangulum Galaxy (M33), a face-on spiral with a pale blue-white core, dark dust lanes, and sweeping blue spiral arms dotted with red and pink star-forming regions, set against a dark star field. A bright blue star with diffraction spikes appears at left. Small white labels with leader lines point to star clusters labeled C20, C27, C38, C39, H10, H38, M9, R12, R14, U49, U62, U77, and U137.

Astrophotography, Deep-Sky Objects

Imaging star clusters in other galaxies

How do professional astronomers book time on JWST or Hubble?

Solar System, Stars

Case closed on long-standing space weather mystery

Satellite photograph of the contiguous United States at night, showing city lights as golden points and clusters against a dark navy landmass and black ocean. The eastern two-thirds of the country glow densely and almost continuously along the coasts and around the Great Lakes, while the western half shows sparser, more isolated clusters of light concentrated along the Pacific coast and scattered through the interior.

How can I reduce my personal contribution to light pollution?

Photograph of Saturn against a black background, tilted with its northern hemisphere tipped toward the viewer and pale cream and tan cloud bands crossing its globe. The wide ring system casts a dark shadow band across the planet's upper portion, with a faint bluish tint visible at the upper edge of the rings where they cross in front of the disk.

Sky This Week, The Sky This Week

The Sky This Week from October 2 to 9: Saturn at its best

A photoillustration of a thick crescent Moon against a black sky, filling the right side of the frame. The sunlit crescent curves along the left edge, showing gray maria and many craters, and the rest of the Moon's disk is in shadow. Just off the Moon's lower-left limb sits Jupiter, a small tan disk with visible cloud bands, lined up with its four Galilean moons as tiny points of light: from left to right, Ganymede, Jupiter, Io, Callisto, and Europa. The scene shows the jovian system a few minutes before the Moon occults it. Empty black space fills the left side of the image.

Observing, Planets, The Moon, Upcoming Events

See the Moon occult Jupiter October 6

Photograph of Saturn against a dark background, seen nearly edge-on with its ring system stretching horizontally across the globe and casting a thin shadow band on the planet. The pale gold and tan cloud bands are visible, with a bright white storm feature swirling in the planet's southern hemisphere.

October 2026: What’s in the sky this month?

Telescopes and Equipment

New astronomy products to fall for this month

A Voyager 2 spacecraft image of Neptune showing the planet as a sphere with vivid blue and teal atmospheric bands, a large dark storm system visible in the southern hemisphere, and bright white clouds including a prominent high-altitude cloud streak near the center. The planet's limb glows with a subtle golden hue against the black background of space.

Sky This Week, The Sky This Week

The Sky This Week from September 25 to October 2: Neptune at opposition