GreyCrow
TheBrownDog
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Not sure how new ( to Netflix) it is but a 1hr doco on the concept and construction of James Webb is up
Astronomy General Space Discussion
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Voyager 2 has phoned home at last.
www.abc.net.au
NASA restores contact with missing Voyager 2 spacecraft after weeks of silence
Voyager 2 was exploring interstellar space 19 billion kilometres away from Earth when an erroneous command caused it to tilt its antenna way from earth.
www.abc.net.au
The rover is now off and running.
Amazing Footage Shows Indian Rover Ramping Down to the Lunar Surface
A fascinating new video released by the Indian space agency show the country's lunar lander rolling down to the surface.
futurism.com
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Glad they didn't let their last failure halt their efforts!The rover is now off and running.
Brilliant work by the ISRO. Done on a shoestring.Amazing Footage Shows Indian Rover Ramping Down to the Lunar Surface
A fascinating new video released by the Indian space agency show the country's lunar lander rolling down to the surface.
GreyCrow
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Yes, the gag was there. The other day I managed to get the 'Don't call me Shirley' response from a poster, for which I was very grateful.
Back on thread. Those pesky early galaxies that the James Web telescope has found has already lead to a new theorem - the 26 billion year old galaxy, personally I would have preferred 42.
How old is the universe exactly? A new theory suggests that it’s been around for twice as long as believed
A new hypothesis suggests that the universe may be twice as old as we had believed. Observations from the James Webb Space Telescope provide new information on the rate of the universe’s expansion.
theconversation.com
Ars has a longish article about the ISRO space program including the recent landing on the moon. Very impressive.
arstechnica.com
India’s accomplishments in space are getting more impressive
These images from the Moon are a crowning achievement for India's space program.
James Webb telescope has found an Ocean planet, K2–18 b. It is around twice the size of Earth and orbits in the habitable zone of a star located 120 light-years from our solar system and might have liquid water (or not)
www.space.com
Exoplanet's surface may be covered in oceans, James Webb Space Telescope finds
The so-called Hycean planet K2–18 b is around twice the size of Earth and orbits in the habitable zone of a star located 120 light-years from our solar system.
ISRO Vikram rover has not woken up with the new lunar day. Chances of it phoning home' decrease with time.
futurism.com
Still a great achievement. I don't think it was built specially to survive the lunar cold, it was a case of hope rather than expectation.
India's Moon Lander Appears to Have Died
India's Vikram lunar lander has yet to "re-awaken" from its prolonged night-time nap, worrying scientists.
futurism.com
Our solar system is increasingly looking unusual, some common exoplanet types we don't have include superearths, warm gas giants, water worlds and this last group, the burning terrestrials or lava worlds.
www.forbes.com
Half Of All Rocky Planets Are Strange ‘Burning Worlds’ Of Lava, Say Scientists
A new study reveals secrets about the mysterious planets where molten lava flows on the surface—one of the most common types of exoplanets so far discovered.
www.forbes.com
GreyCrow
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Arent these ( burning terrestrials) just in different stages of their own evolution? Or at the end?Our solar system is increasingly looking unusual, some common exoplanet types we don't have include superearths, warm gas giants, water worlds and this last group, the burning terrestrials or lava worlds.
Half Of All Rocky Planets Are Strange ‘Burning Worlds’ Of Lava, Say Scientists
A new study reveals secrets about the mysterious planets where molten lava flows on the surface—one of the most common types of exoplanets so far discovered.
Just the diversity of planets and moons in our solar system is amazing.Our solar system is increasingly looking unusual, some common exoplanet types we don't have include superearths, warm gas giants, water worlds and this last group, the burning terrestrials or lava worlds.
Half Of All Rocky Planets Are Strange ‘Burning Worlds’ Of Lava, Say Scientists
A new study reveals secrets about the mysterious planets where molten lava flows on the surface—one of the most common types of exoplanets so far discovered.
In term of their origin, I would guess it's the same as other terrestrials, they just ended up very close their star, some with fast orbits of days, others tidally locked, in both instances getting nice and toasty. Same origins, different evolutionary paths because of orbital location. Like the real estate agents say, location, location, location.
A fun one from Gizmodo, the last images from space probes, usually before their demise.
gizmodo.com.au
Not sure why they missed the USSR Phobos 2, this was the famous mission that allegedly imaged a UFO a few days earlier - it sent back an image just before it died and the cause of the probes failure is obvious - see below.
The Last Images From Doomed Space Probes
These space explorers managed to document their final moments, sending back precious data before going silent forever.
gizmodo.com.au
Not sure why they missed the USSR Phobos 2, this was the famous mission that allegedly imaged a UFO a few days earlier - it sent back an image just before it died and the cause of the probes failure is obvious - see below.
I've posted about Gilmour Space before, things are reaching a climax as it is soon to launch it's first orbital rocket, the Eris. Launching from Bowen this rocket will be the first Australian built rocket to reach orbit.
www.dst.defence.gov.au
We had the honour of being the 3rd country to build and launch a satellite but IIRC we used a left over US Redstone rocket to launch an Australian built satellite, WRESAT. We also had the dishonour of being the first country to loose the ability to launch satellites, much easy just to dig stuff out of the ground. Anyway, this is a description of the Eris rocket from the Wiki
'Gilmour Space is currently developing its Eris Block 1 rocket, a three-stage small-lift launch vehicle designed to launch up to 300 kg of payload to low Earth orbit. The vehicle is known to have four of Gilmour's Sirius hybrid rocket motors propelling the first stage, another Sirius motor in its second stage, and a new Phoenix liquid rocket engine in its third stage. This Eris vehicle has a height of 25m and a diameter of 2m for the first stage, which tapers at the interstage of the first and second stage to 1.5m.[16] The payload fairing has two diameter configurations, 1.5m and 1.2m.[17]
Eris's maiden launch is targeted for late 2023, pending final approvals from the Federal Government and Australian Space Agency. It will be the first Australian orbital rocket to launch from Australia, and the first orbital launch attempt from Australia in over 50 years. Moreover, if successful, Eris could be the world's first hybrid rocket to achieve orbit.
Gilmour Space has also revealed that it is developing an Eris Block 2 vehicle to lift 1,000 kg to low Earth orbit, which is expected to begin commercial service in 2026.'
WRESAT — Weapons Research Establishment Satellite
In 1967, Australia became the third nation to design and launch a satellite to orbit the earth.
We had the honour of being the 3rd country to build and launch a satellite but IIRC we used a left over US Redstone rocket to launch an Australian built satellite, WRESAT. We also had the dishonour of being the first country to loose the ability to launch satellites, much easy just to dig stuff out of the ground. Anyway, this is a description of the Eris rocket from the Wiki
'Gilmour Space is currently developing its Eris Block 1 rocket, a three-stage small-lift launch vehicle designed to launch up to 300 kg of payload to low Earth orbit. The vehicle is known to have four of Gilmour's Sirius hybrid rocket motors propelling the first stage, another Sirius motor in its second stage, and a new Phoenix liquid rocket engine in its third stage. This Eris vehicle has a height of 25m and a diameter of 2m for the first stage, which tapers at the interstage of the first and second stage to 1.5m.[16] The payload fairing has two diameter configurations, 1.5m and 1.2m.[17]
Eris's maiden launch is targeted for late 2023, pending final approvals from the Federal Government and Australian Space Agency. It will be the first Australian orbital rocket to launch from Australia, and the first orbital launch attempt from Australia in over 50 years. Moreover, if successful, Eris could be the world's first hybrid rocket to achieve orbit.
Gilmour Space has also revealed that it is developing an Eris Block 2 vehicle to lift 1,000 kg to low Earth orbit, which is expected to begin commercial service in 2026.'
The headline to the article is misleading, it's actually a report on using MOND to describe the movement of the outer objects of the solar system. MOND stands for Modified Newtonian dynamics (MOND) and is a theory that proposes a modification of Newton's law of universal gravitation to account for observed motion of galaxies. It is an alternative to the 'pixie dust' theory of dark matter in terms of explaining why galaxies do not appear to obey the currently understood laws of physics. There are abnormalities in the movement of Kuiper belt objects that have made folks think there is another planet (or something more exotic) lurking out there. These scientist showed that using MOND to model movement they ended up with was a bunch of rocks behaving pretty much exactly like the observed clustering. No need for planet 9. This is the first time MOND has been used at 'sub galactic' levels.
www.sciencealert.com
Planet Nine Might Not Be a Planet At All... But Something Else Entirely
Planet Nine is proving difficult to pin down.
www.sciencealert.com
A long time ago, in a galaxy far away two neutron stars in a death spiral collided and produced a 'kaboom' that Marvin the Martian would have been proud of. After 130 million years the light and the gravity waves arrived at Earth on the August 17, 2017. The odd thing was the gravity wave arrived nearly 2 seconds before the light. This article discusses why.
bigthink.com
The author is an astrophysicist which probably explains his slightly incorrect statement regarding placental mammals, but we can forgive him for that because he's not a biologist.
Light and gravitational waves don't arrive simultaneously
In 2017, a kilonova sent light and gravitational waves across the Universe. Here on Earth, there was a 1.7 second signal arrival delay. Why?
bigthink.com
Mammals in space....
www.space.com
Can humans reproduce in space? Mouse breakthrough on ISS a promising sign
This is the first-ever study that shows mammals may be able to thrive in space.
The US is planning it's next launch of it's apace plane, the X37B on a Falcon Heavy, which will probably enable it to a geostationary orbit.
www.thedrive.com
This image illustrates the significant differences.
It's a very different environment because it's outside the Van Allen belts, so the craft will be exposed to more radiation. The X37B has been able to perform very long duration missions in LEO, this is it's first at higher orbits.
X-37B Headed Deeper Into Space With Falcon Heavy Rocket's Help
The X-37B spaceplane is planned to be launched again in December, this time atop the most powerful commercial rocket in the world.
www.thedrive.com
This image illustrates the significant differences.
It's a very different environment because it's outside the Van Allen belts, so the craft will be exposed to more radiation. The X37B has been able to perform very long duration missions in LEO, this is it's first at higher orbits.
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Mofra
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SBS had a doco on last night. Same one?
I've been listening to quite a few astrophysics podcasts & YouTube videos lately. Gravity as an illusion is a very interesting concept.
I don't suggest you check that illusion, there are many Russians who can attest to the deadly reality of gravity. Gravity was also the challenge for SpaceX and the second launch of Starship. It did better this time, it didn't destroy the launchpad, the 1st stage fired successfully and the second stage separated doing a 'hot launch' and it got to about 150kms and 25,000kmh. Alas, the booster exploded shortly after separation and the 2nd stage lost contact 9 minutes into the flight, most likely due to self destruct activation.
You can watch the launch here
SpaceX attempts second test flight of world’s largest rocket – watch live
The Starship rocket system is expected to launch from Texas after the spacecraft exploded in air during a first test flight in April
www.theguardian.com
Four names have been chosen for our moor rover, you can vote to choose the name.
www.abc.net.au
I think I like Kakirra best. An indigenous word from the Kaurna region in Adelaide, it means 'Moon' and it wouldn't be out of place in Anime or Manga.
Australia votes to name its first Moon rover, after four shortlisted names are announced — as it happened
The Australian Space Agency reveals four potential names for the country's first Moon rover, as part of a competition that now heads to a public vote.
www.abc.net.au
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Gilmour Space are planning an orbital launch of their Eris rocket early next year. An exciting return to having Australian orbital launch capabilities. We were the 5th nation to launch a satellite, though that was using a leftover US rocket. This will be the first locally made rocket to launch an orbital payload. They have an interesting approach using hybrid rocket motors with 3D printed fuel.
www.abc.net.au
'Standing 25 metres tall, and weighing over 30 tonnes, the three-stage Eris rocket is powered by five hybrid engines that contain a solid fuel and a liquid oxidiser. Originally anticipated to take-off in 2023, Eris is planned to deliver a 305kg payload to low earth equatorial orbit at an altitude of 500km.'
An Australian-made rocket will be launched in Queensland in a historic first
The first locally made rocket to be launched into space from Australian soil is scheduled for lift-off from a commercial facility in Queensland early next year.
www.abc.net.au
'Standing 25 metres tall, and weighing over 30 tonnes, the three-stage Eris rocket is powered by five hybrid engines that contain a solid fuel and a liquid oxidiser. Originally anticipated to take-off in 2023, Eris is planned to deliver a 305kg payload to low earth equatorial orbit at an altitude of 500km.'
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