*me On Ellen*

Chris Hadfield: What I learned from going blind in space

There’s an astronaut saying: In space, “there is no problem so bad that you can’t make it worse.” So how do you deal with the complexity, the sheer pressure, of dealing with dangerous and scary situations? Retired colonel Chris Hadfield paints a vivid portrait of how to be prepared for the worst in space (and life) – and it starts with walking into a spider’s web. Watch for a special space-y performance.

Bill Nye should just be the answer to all our problems

Esse é o Objeto de Hoag, uma galáxia curiosa do tipo anelar: seu núcleo é rodeado por um anel de estrelas, gás e poeira. Sua origem é um mistério, pois galáxias anelares são formadas quando uma galáxia atravessa a outra. Nesse caso não há nenhuma galáxia nas imediações que possa ter feito isso. . This is the Hoag’s Object, a curious galaxy in the the shape of a ring: its nucleus is surrounded by a ring of stars, gas and dust. Its origins remains a mystery, as other ring galaxies are formed when one galaxy passes through another galaxy. In this case, there is no candidate for the bullet galaxy in the vicinity. . Credit: NASA . #nasa #hubble #hubblespacetelescope #telescope #telescopio #astronomia #astronomy #ring #anel #galaxy #galaxia #space #espaço #mistery #misterio #hoag #astrogram #observatoriog1 #bullet #alvo #target

Babylon gardens, from Alexander Movie set.

In 1952, Wernher von Braun wrote a book called “Project Mars” which imagined that human colonists on Mars would be led by a person called “Elon”. Photo : businessinsider.com

Love him to Mars and back ❤️

We Have Now Reached The Limits Of The Hubble Space Telescope

“Finally, there are the wavelength limits as well. Stars emits a wide variety of light, from the ultraviolet through the optical and into the infrared. It’s no coincidence that this is what Hubble was designed for: to look for light that’s of the same variety and wavelengths that we know stars emit.

But this, too, is fundamentally limiting. You see, as light travels through the Universe, the fabric of space itself is expanding. This causes the light, even if it’s emitted with intrinsically short wavelengths, to have its wavelength stretched by the expansion of space. By the time it arrives at our eyes, it’s redshifted by a particular factor that’s determined by the expansion rate of the Universe and the object’s distance from us.

Hubble’s wavelength range sets a fundamental limit to how far back we can see: to when the Universe is around 400 million years old, but no earlier.”

The Hubble Space Telescope, currently entering its 30th year of service, has literally revolutionized our view of the Universe. It’s shown us our faintest and most distant stars, galaxies, and galaxy clusters of all. But as far back as it’s taken us, and as spectacular as what it’s revealed, there is much, much more Universe out there, and Hubble is at its limit.

Here’s how far we’ve come, with a look to how much farther we could yet go. It’s up to us to build the tools to take us there.