Comet NEOWISE over Lebanon

A comet has suddenly become visible to the unaided eye.

4h

M43: Dust, Gas, and Stars in the Orion Nebula

Unspeakable beauty and unimaginable bedlam can be found together in the Orion Nebula

1d

Saturns Northern Hexagon

Why would clouds form a hexagon on Saturn?

2d

Meeting in the Mesosphere

A sensitive video camera on a summit of the Vosges mountains in France

3d

Lynds Dark Nebula 1251

Stars are forming in Lynds Dark Nebula

4d

The Galaxy, the Planet, and the Apple Tree

The Galaxy, the Planet, and the Apple Tree

5d

Our Rotating Earth

Has your world ever turned upside-down?

6d

Bright Planetary Nebula NGC 7027 from Hubble

What created this unusual planetary nebula?

1w

Dark Sky Reflections

When the lake calmed down, many wonders of the land and sky appeared twice.

2w

Europa and Jupiter from Voyager 1

What are those spots on Jupiter?

2w