Tag: nasa

Pleiades to Hyades

This cosmic vista stretches almost 20 degrees from top to bottom, across the dusty constellation Taurus. It begins at the Pleiades and ends at the Hyades, two star clusters recognized since antiquity in Earth’s night sky. At top, the compact...

/ December 6, 2019

Electric Night

It may appear, at first, like the Galaxy is producing the lightning, but really it’s the Earth. The featured nighttime landscape was taken from a southern tip of the Italian Island of Sardinia in early June. The foreground rocks and...

/ December 4, 2019

Star Trails for a Red Planet

Does Mars have a north star? In long exposures of Earth’s night sky, star trails make concentric arcs around the north celestial pole, the direction of our fair planet’s axis of rotation. Bright star Polaris is presently the Earth’s North...

/ November 30, 2019

Galileo s Europa Remastered

Looping through the Jovian system in the late 1990s, the Galileo spacecraft recorded stunning views of Europa and uncovered evidence that the moon’s icy surface likely hides a deep, global ocean. Galileo’s Europa image data has been remastered here, using...

/ November 29, 2019

Hoags Object: A Nearly Perfect Ring Galaxy

Is this one galaxy or two? This question came to light in 1950 when astronomer Arthur Hoag chanced upon this unusual extragalactic object. On the outside is a ring dominated by bright blue stars, while near the center lies a...

/ November 27, 2019

Venus and Jupiter on the Horizon

What are those two bright objects on the horizon? Venus and Jupiter. The two brightest planets in the night sky passed very close together — angularly — just two days ago. In real space, they were just about as far...

/ November 26, 2019

Comet Heart and Soul

The greenish coma of comet 21P/Giacobini-Zinner stands out at the left of this telephoto skyscape spanning over 10 degrees toward the northern constellations Cassiopeia and Perseus. Captured on August 17, the periodic comet is the known parent body of the...

/ August 28, 2018

The Pencil Nebula in Red and Blue

Having children that are 4 and 2 I know the look of these remnants very well, and I’m sure my daughter has drawn it on a piece of paper once or twice before. While the colours that they use are...

/ August 13, 2018

Stickney Crater

Stickney Crater, the largest crater on the martian moon Phobos, is named for Chloe Angeline Stickney Hall, mathematician and wife of astronomer Asaph Hall. Asaph Hall discovered both the Red Planet’s moons in 1877. Over 9 kilometers across, Stickney is...

/ August 8, 2018

Eclipsed Moon and Mars over Mountains

There is something unusual about this astronomically-oriented photograph. It’s not obvious — it was discovered only during post-processing. It is not the Moon, although capturing the Moon rising during a total lunar eclipse is quite an unusually interesting sight. (Other...

/ August 7, 2018