Category: astronomy

Lunar south pole

by Pascal Paquereau

Details:

The image was taken with good conditions on February 5, 2020. The play of shadows near the south lunar pole gives relief to the craters. Equipment: Skywatcher 254/1200 telescope (0.18 “/ p), ASI178M, Baader Q-Turret X2.25 barlow and Baader green filter. Stack of 300 images with AS!3. The final image is presented with its acquisition size. Best regards.

High-res

From this tweet from astrophotographer Marc Leatham.

Over the last five years I’ve collected eclipses with this single composition in mind. I call it “Cyclipse”. It’s made of a total solar eclipse, partial solar eclipse, total lunar eclipse, and waxing crescent Moon. It feels so good to see it come together over the years. #eclipse

How Enceladus Got Its Stripes

Saturn’s icy moon Enceladus is of great interest to scientists due to its subsurface ocean, making it a prime target for those searching for life elsewhere. New research led by Carnegie’s Doug Hemingway reveals the physics governing the fissures through which ocean water erupts from the moon’s icy surface, giving its south pole an unusual “tiger stripe” appearance.

Via The Carnegie Institution for Science

Image Credit: NASA, ESA, JPL, SSI, Cassini Imaging Team

Awesome star trail photos by Lincoln Harrison

Read about the technic in his blog.

First Photo of the Lunar Farside

(1959)

The far side of the Moon is surprisingly different. The most striking difference evident in the Luna 3 pictures is the absence of the large, dark seas of cooled lava, called maria, that cover a substantial fraction of the Earth-facing near side. The far side is instead densely peppered with impact craters of every size and age.

(Via NASA)

h-t kottke.org

What does a black hole look like up close?

A simulation of what a black hole with a disk of gas swirling around it would look, given the bizarre effects of its fierce gravity on the light from the disk. Credit: NASA’s Goddard Space Flight Center/Jeremy Schnittman

Via Bad Astronomy

North polar dunes on Mars

Credits: ESA/Roscosmos/CaSSIS, CC BY-SA 3.0 IGO

Dunes come in various characteristic shapes on Mars just as on Earth, providing clues about the prevailing wind direction. Monitoring them over time also gives us a natural laboratory to study how dunes evolve, and how sediments in general are transported around the planet.

A Topographic Map of the Moon

By Eleanor Lutz

Open-Source Code

💙

The solar eclipse that occurred in Chile on July 2, 2019 photographed by Dan Marker-Moore. Great job!

Via Colossal

A Close Look at Newborn Planets Reveals Hints of Infant Moons

Via Quanta Magazine

This is the first clear image of a planet caught in the act of formation. The star, PDS 70, is blacked out at the center of the image, while the planet, PDS 70b, is visible as a bright dot to its right. Astronomers just discovered a second newborn planet circling PDS 70.

Credit: 

ESO/A. Müller et al