Friday, November 26, 2021

Meet the Candidates to be Earth's First Interstellar Astronauts

11/26/2021

NEWS & FEATURES

Meet the candidates to be Earth's first interstellar astronauts
3Dstock/Shutterstock

Meet the candidates to be Earth's first interstellar astronauts

The first interstellar spacecraft could carry microscopic passengers. So the search is on for ideal candidates.


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Travel Quest

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White dwarfs devouring exoplanets reveal exotic types of rock
NOIRLab/NSF/AURA/J. da Silva; Image processing: M. Zamani and M. Kosari (NSF's NOIRLab)

White dwarfs devouring exoplanets reveal exotic types of rock

Bodies orbiting other stars may be stranger than imagined.

Starbirth Puzzle 
Sketching the Sun with AI
NASA’s Goddard Space Flight Center/SDO/S. Wiessinger. Pencil: Vlad Ivantcov/Dreamstim

Sketching the Sun with AI

The oldest method of recording the Sun has some new artificial-intelligence tricks.

Snapshot: Hubble spots a mysterious superbubble
NASA, ESA, V. Ksoll and D. Gouliermis (Universität Heidelberg), et al.; Processing: Gladys Kober (NASA/Catholic University of America)

Snapshot: Hubble spots a mysterious superbubble

N44 has a strange hole at its heart.

Ask Astro: Does dark energy create the voids between galaxy clusters?
Astronomy: Roen Kelly, after Andrew Z. Colvin

Ask Astro: Does dark energy create the voids between galaxy clusters?

I’ve seen it stated that giant voids exist between groups of galaxies. Is dark energy, the mysterious force driving galaxies away from one another, creating these vast voids of space?

OBSERVING

The sky this week

The sky this week

Your daily digest of celestial events coming soon to a sky near you.

PICTURE OF THE DAY

Stellar remnant
Joshua Rose from Solvay, New York

Stellar remnant

The Eastern Veil Nebula (NGC 6992) is part of the Cygnus Loop, the remains of a giant star that exploded tens of thousands of years ago.

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Scientist Pankaj

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