Csillagászat (Hírfigyelő)

Shedding light on Saturn's moon Titan's mysterious atmosphere

sciencedaily.com - 41 perc 45 másodperc
A new study tackles one of the greatest mysteries about Titan, one of Saturn's moons: the origin of its thick, nitrogen-rich atmosphere. The study posits that one key to Titan's mysterious atmosphere is the 'cooking' of organic material in the moon's interior.

A Space Rock Strikes Moon During the Total Lunar Eclipse

The Moon got bonked by a space rock during Sunday's total lunar eclipse. Take a look!

The post A Space Rock Strikes Moon During the Total Lunar Eclipse appeared first on Sky & Telescope.

Initial Results from the Ultima Thule Flyby

NASA's New Horizons made history when it flew by "Ultima Thule" on New Year's Day, but the science return is only beginning. Here's the latest from mission principal investigator Alan Stern.

The post Initial Results from the Ultima Thule Flyby appeared first on Sky & Telescope.

Lunar Impact

The post Lunar Impact appeared first on Sky & Telescope.

Saturn’s Rings are Only 10 to 100 Million Years Old

universetoday - 2019. január 22. 22:52

Can you imagine the Solar System without Saturn’s rings? Can you envision Earth at the time the dinosaurs roamed the planet? According to a new paper, the two may have coincided. Data from the Cassini mission shows that Saturn’s rings may be only 10 to 100 million years old. They may not have been there …

The post Saturn’s Rings are Only 10 to 100 Million Years Old appeared first on Universe Today.

Piercing the Veil of Our Black Hole

skyandtelescope.com-MostRecent - 2019. január 22. 22:48

Astronomers have overcome the interference of clumpy interstellar gas to catch a glimpse of the gas around the Milky Way’s central black hole.

The post Piercing the Veil of Our Black Hole appeared first on Sky & Telescope.

How hot are atoms in the shock wave of an exploding star?

sciencedaily.com - 2019. január 22. 17:48
A new method to measure the temperature of atoms during the explosive death of a star will help scientists understand the shock wave that occurs as a result of this supernova explosion.

A fleeting moment in time: Last breath of a dying star

sciencedaily.com - 2019. január 22. 16:45
The faint, ephemeral glow emanating from the planetary nebula ESO 577-24 persists for only a short time -- around 10,000 years, a blink of an eye in astronomical terms. ESO's Very Large Telescope captured this shell of glowing ionized gas -- the last breath of the dying star whose simmering remains are visible at the heart of this image. As the gaseous shell of this planetary nebula expands and grows dimmer, it will slowly disappear from sight.

Saturn Hasn’t Always Had Rings

skyandtelescope.com-MostRecent - 2019. január 22. 16:27

Analyses of data from Cassini’s final days suggest the rings are a late addition and use them to solve a Saturnian mystery.

The post Saturn Hasn’t Always Had Rings appeared first on Sky & Telescope.

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