Otra artista más. @atte-rios - Tumblr Blog

#digital art #my art #art #artists on tumblr #ilustration #ilustracion #artedigital #art digital #outer wilds #fanart

#digital art #my art #art #artists on tumblr #outer wilds #fanart #ilustrationart #ilustration #art digital #dibujo

k-eke

TV.

zandraart

little left but sky

startswithabang

3 Big Lessons We Can All Learn On The Hubble Space Telescope’s 30th Anniversary

“Before Hubble, we did not know how fast the Universe was expanding. We did not know its age; we did not know how much matter was in it; we did not know whether its ultimate fate was to recollapse or expand forever. We did not know when stars and galaxies first formed, what the earliest ones were like, or the details of how stars were born and died. We did not even know whether there were planets in solar systems beyond our own.

30 years later, we have the answers to all of these questions, largely thanks to scientific contributions made using this one astronomical observatory. New questions have arisen in their place, as pushing the cosmic frontier back to new depths always leads to the discovery of novel phenomena that themselves require an explanation. The cosmic frontier is truly endless in this regard. May we always remain curious enough to investigate and solve whatever mysteries the Universe lays before us.”

Individually, across a myriad of issues from the Solar System to stars and galaxies to the ultra-distant Universe and the largest cosmic scales, Hubble has illuminated the Universe like no other observatory in history. But on an even grander intellectual scale, it’s exemplified three major scientific lessons that we should all remember in everything we do.

1.) Whenever you can, look as you’ve never looked before. 2.) Always follow the evidence, no matter where it leads. 3.) There is a ‘right way’ to be wrong.

On this occasion, the 30th anniversary of Hubble’s launch, take a look back at the biggest lessons it has to offer, and may we apply these moving forward in all we do.

notte-senzastelle

NASA's pic

nowthisnews

NASA turned this space photo into sound — and it’s super creepy 🌌

follow @nowthisnews for daily news videos & more

startswithabang

Did Hubble Just Find New Stars Where Planets Are Impossible?

“Previously, studies of planet-forming disks were restricted to nearby, lower-mass stars. Those observed disks are currently creating planets, which multiple instruments have independently identified. However, the central regions of massive clusters may render planet formation impossible. Very massive stars are so hot that potentially planet-forming dust has already evaporated away or had its composition altered. As a result, they cannot create the stable, early structures that eventually create planets.”

If you take the results from NASA’s Kepler mission at face value, you might well conclude that 100% of the stars in the Universe have planets around them. But that’s unlikely to be true! A new study of the star cluster Westerlund 2, one of the youngest, most massive star clusters in the Milky Way galaxy, revealed that its central stars, where some 37 behemoths approaching 100 solar masses apiece reside, don’t have the material surrounding them necessary to form planets. It’s thought that the radiation and winds from these new stars either evaporate or change the composition of the dust, and that’s what makes planet formation impossible there.

As it turns out, location-location-location isn’t just for real estate on Earth, but on a cosmic scale as well. Come learn about these planet-free stars today!

zanyunimo

So I’ve been helping to identify asteroids and other cool space objects in Hubble photos for NASA and I came across this amazing image of the birth of a star.

If anyone knows an artist who can colourize is, let me know; I’d love a colour print. Obviously I’ll pay.

startswithabang

Hubble Reveals A ‘Red Dot Surprise’ From The Distant Universe

“By peering into the distant Universe, Hubble reveals galaxies from across cosmic time. However, even with phenomenally deep views, most galaxies still remain undiscovered. Light spreads out as distance increases, rendering the earliest galaxies too faint for most observatories. Additionally, the Universe’s expansion stretches the light’s wavelength, shifting it out of the visible range. However, Einstein’s idea — of mass curving space — frequently lends a helping hand. Intervening concentrations of matter between ourselves and a distant object can stretch, distort, and magnify its light. This phenomenon — strong gravitational lensing — reveals objects otherwise too faint and distant to be seen.”

A decade ago, two European Space Agency satellites, Planck and Herschel, teamed up to identify galaxy clusters that were candidates for having gravitationally lensed, ultra-distant galaxies that could be seen behind them. As a follow-up, the Hubble Space Telescope took a high-resolution look at them, identifying the optical starlight emitted from them for the first time.

Perhaps the most spectacular one of all appears as just “red dots” in the image, but the “dots” are all the same galaxy: from less than 2 billion years after the Big Bang. See it for yourself today.

startswithabang

This Is What The ‘Last Gasp’ Of A Dying Sun-Like Star Looks Like

“In the final stages of a red giant star’s life, its core runs out of fusible helium. The star pulses internally, fusing hydrogen in a shell surrounding the core. These fusion bursts eject the diffuse star’s outer, hydrogen gas layers. The central star’s light reflects off the surrounding cool, dark gas. This marks the beginning of the star’s final phase: a preplanetary (or protoplanetary) nebula.”

At the end of the Sun’s life, like all Sun-like stars, it will transition to become a planetary nebula (from its outer layers) and a white dwarf (from its core). But before that end-stage occurs, there’s one last stage that it must go through, even after it’s done fusing helium into carbon in its core: the post-AGB phase, which is where it creates a spectacular sight known as a preplanetary (or, if you came along earlier than 2005, protoplanetary) nebula.

What causes it? And what does it look like? Come learn and see what the last gasp of a dying, Sun-like star is all about!