Tres-4b-blog - ✰

A Solar Filament Erupts : What’s happened to our Sun? Nothing very unusual – it just threw a filament. Toward the middle of 2012, a long standing solar filament suddenly erupted into space producing an energetic Coronal Mass Ejection (CME). The filament had been held up for days by the Sun’s ever changing magnetic field and the timing of the eruption was unexpected. Watched closely by the Sun-orbiting Solar Dynamics Observatory, the resulting explosion shot electrons and ions into the Solar System, some of which arrived at Earth three days later and impacted Earth’s magnetosphere, causing visible aurorae. Loops of plasma surrounding an active region can be seen above the erupting filament in the featured ultraviolet image. Although the Sun is now in a relatively inactive state of its 11-year cycle, unexpected holes have opened in the Sun’s corona allowing an excess of charged particles to stream into space. As before, these charged particles are creating auroras. via NASA

Violent Collision of Two Neutron Stars Occurred near Pre-Solar Nebula 4.6 Billion Years Ago

http://www.sci-news.com/astronomy/collision-two-neutron-stars-pre-solar-nebula-07154.html

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

High Intensity Aurora Borealis over Norway

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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.

SpaceTime 20190503 Series 22 Episode 34 is now out

SpaceTime covers the latest news in astronomy & space sciences.

The show is available as a free twice weekly podcast through Apple Podcasts (itunes), Stitcher, Google Podcast, Pocketcasts, SoundCloud, Bitez.com, YouTube, Audio Boom, your favourite podcast download provider, and from www.spacetimewithstuartgary.com

SpaceTime is also broadcast coast to coast across the United States on Science360 Radio by the National Science Foundation in Washington D.C. and around the world on Tune-In Radio.

SpaceTime daily news blog: http://spacetimewithstuartgary.tumblr.com/ SpaceTime facebook: www.facebook.com/spacetimewithstuartgary SpaceTime Instagram @spacetimewithstuartgary SpaceTime twitter feed @stuartgary SpaceTime YouTube: https://www.youtube.com/c/SpaceTimewithStuartGary

Today’s stories…

First results from ExoMars Trace Gas Orbiter During its first year in orbit the ExoMars Trace Gas Orbiter has made some surprizing discoveries about the impact of the recent global Martian dust storm and an apparent lack of methane in the red planet’s atmosphere.

Dragon spacecraft destroyed in dramatic explosion The first crew Dragon two capsule which successfully flew to the International Space Station in March has been destroyed in a major explosion at the Cape Canaveral air force station in Florida.

Stratolaunch test flight Stratolaunch has successfully undertaken the first test flight of the company’s behemoth twin fuselage six engine jetliner designed to launch satellites into space.

May Skywatch We tour the night skies of May which play host to the annual Eta-Aquarids meteor shower generated by Halley’s Comet.

Last Wednesday’s show…

New model for Nova explosions Scientists will need to go back to the drawing board to come up with new ways in which powerful explosions – known as novae – can occur on the surfaces of white dwarf stars.

Explaining super-luminous novae Astronomers have discovered that shockwaves generated during nova explosions can dramatically amplify their power and brightness.

NASA’s InSight Detects First Likely ‘Quake’ on Mars NASA’s Mars InSight lander has measured and recorded for the first time ever a likely “marsquake.”

New physics needed to explain differences in the Hubble Constant New observations are showing that differences in how fast the universe is expanding now compared to how fast it was expanding billions of years ago are no statistical accident.

The Science Report Climate change is now threatening the world’s doomsday vault. The world’s second largest colony of emperor penguins almost wiped out. Extreme ocean winds and wave heights are increasing around the globe. A small bone behind the knee, which was once rare in humans is becoming more common. Palaeontologists have unearthed a new species of hadrosaur dinosaur in Mongolia. History revisionists spewing lies and cherry-picked half-truths for racist and political propaganda

SpaceTime Background SpaceTime is Australia’s most respected astronomy and space science news program. The show reports on the latest stories and discoveries making news in astronomy, astrophysics, cosmology, planetary science, galactic and stellar evolution, physics, spaceflight, and general science. SpaceTime features interviews with leading Australian scientists about their latest research. The show is broadcast coast to coast across the United States by the National Science Foundation on Science360 Radio and around the world on Tune in Radio. SpaceTime is available in Australia as a twice weekly podcast which averages around three million downloads annually. It’s hosted on line through Bitez.com on all major podcast platforms. SpaceTime began life in 1995 as ‘StarStuff’ on ABC NewsRadio. Stuart Gary created the show while he was NewsRadio’s Science Editor, evening presenter, and news anchor (a position he held for more than 17 years). Gary wrote, produced and hosted StarStuff, consistently achieving 9 percent of the Australian radio audience share - according to Neilsen ratings survey figures for the five major Australian metro markets (Sydney, Melbourne, Brisbane, Adelaide, & Perth). The StarStuff podcast was hosted by ABC Science on line achieving over 1.3 million downloads annually. Sadly, the popular program was axed in 2015 during ABC budget cuts. Rather than remain with the ABC, Gary resigned to continue producing the show independently and rebranding it as SpaceTime. The first episode of SpaceTime was broadcast on February 8th 2016 and the show has been in continuous production ever since. SpaceTime now reaches an audience almost three times greater that it achieved as StarStuff and continues to grow.

Astronaut John Young breakdancing falling on the moon during the Apollo 16 mission, 1972

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

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