0

Hubble Marks 29th Anniversary with Remarkable View of Southern Crab #SpaceSaturday

via AstronomyNow

To celebrate the 29th anniversary of the Hubble Space Telescope’s launch aboard the shuttle Discovery on 24 April 1990, NASA and the European Space Agency are showcasing the observatory’s view of the Southern Crab Nebula in the southern constellation Centaurus. The nebula looks somewhat like an hourglass, shaped by a pair of stars in a binary system at its heart. One of those stars is a burned-out white dwarf, but the other is a red giant in the process of blowing off its outer layers. Some of that material is influenced by the white dwarf’s gravity with both suns embedded in a disc of gas between them that forces material from the red giant to race away above and below the disc. That’s what gives rise to the hourglass shape. The “legs” of the crab are generated where the outflow slams into interstellar gas and dust.

The red giant’s outflow may be short lived, with the outer structure just a few thousand years old. The red giant eventually will suffer the same fate as its companion, collapsing to form a second white dwarf. The two slowly cooling remnants then will illuminate a shell of gas known as a planetary nebula.

See more!


Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, or even use Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for MakeCode, CircuitPython, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.

Join 12,000+ makers on Adafruit’s Discord channels and be part of the community! http://adafru.it/discord

CircuitPython 2019!

Have an amazing project to share? The Electronics Show and Tell with Google Hangouts On-Air is every Wednesday at 7:30pm ET! To join, head over to YouTube and check out the show’s live chat – we’ll post the link there.

Join us every Wednesday night at 8pm ET for Ask an Engineer!

Follow Adafruit on Instagram for top secret new products, behinds the scenes and more https://www.instagram.com/adafruit/


Maker Business — Over 30 years of hardware development – An interview with Parallax, Inc.

Wearables — Insta-teeth

Electronics — You’ve got the power! (right?)

Biohacking — Moment : The Oura Ring Meditation Feature

Python for Microcontrollers — The need for speed, PewPew, Odroid C2, and more! #Python #Adafruit #CircuitPython #PythonHardware @circuitpython @micropython @ThePSF @Adafruit

Get the only spam-free daily newsletter about wearables, running a "maker business", electronic tips and more! Subscribe at AdafruitDaily.com !



No Comments

No comments yet.

Sorry, the comment form is closed at this time.