Science, Space, Health & Robotics News - Page 4

All the latest Science, Space, Health & Robotics news with plenty of coverage on space launches, discoveries, rockets & plenty more - Page 4.

Astronomers observed a white dwarf X-ray explosion for the first time

Adam Hunt | Thu, May 12 2022 6:38 AM CDT

A study on the explosion titled "X-ray detection of a nova in the fireball phase" has been published in the journal Nature.

Astronomers observed a white dwarf X-ray explosion for the first time 01 | TweakTown.com

German astronomers have observed a white dwarf star explode with X-ray radiation for the first time. White dwarf stars arise when stars earlier in their life cycle, like our sun, use up all of their stellar fuel and shrink, becoming a dead stars. Such dead stars occasionally flare with explosions of radiation, but observing the first X-ray explosion from a white dwarf was "to some extent a fortunate coincidence."

"These X-ray flashes last only a few hours and are almost impossible to predict, but the observational instrument must be pointed directly at the explosion at exactly the right time," the researchers explained.

Continue reading: Astronomers observed a white dwarf X-ray explosion for the first time (full post)

Scientists answers the question of why aliens haven't visited us yet

Adam Hunt | Thu, May 12 2022 5:41 AM CDT

A study posing an answer titled "Asymptotic burnout and homeostatic awakening: a possible solution to the Fermi paradox?" has been published in the Journal of The Royal Society Interface.

Scientists answers the question of why aliens haven't visited us yet 01 | TweakTown.com

Astrobiologists Michael Wong and Stuart Bartlett have proposed a new hypothesis to answer the Fermi Paradox, named after the Nobel Prize-winning physicist Enrico Fermi, who noted the apparent contradiction between the age and size of the universe, which would suggest that alien life should be readily visible, and the lack of any evidence for alien life.

The researchers hypothesize that any other-worldly civilizations would meet one of two fates, one being collapse as their energy demand outpaces their rate of technological innovation to harness more energy. The other scenario would allow them to stave off collapse by focusing on maintaining equilibrium at a certain point, sacrificing the ability to expand further throughout the universe. They based their conclusions on the typical growth seen in cities concerning population and energy consumption.

Continue reading: Scientists answers the question of why aliens haven't visited us yet (full post)

SpaceX's Starship spotted with strange-looking payload door

Adam Hunt | Thu, May 12 2022 4:01 AM CDT

The Twitter user @StarshipGazer has snapped a photo of SpaceX's Starship with an odd-looking payload door.

The photo is of Ship 24, a prototype build of SpaceX's Starship rocket, which SpaceX hopes to send to Mars eventually. A hatch on the ship's side, possibly a payload door, potentially for deploying Starlink satellites, was spotted sitting ajar, perhaps simply in the process of opening or closing or potentially even broken.

Last month, a part of Booster 7 was shown to be damaged in a leaked photo, which was developed for use with Starship. If the hatch captured recently is also damaged, the timeline for Starship's upcoming orbital test flight may be delayed even further. The previous Starship prototype, Ship 23, has allegedly been scrapped, with parts going toward Ship 24's development, and Ship 25 and Ship 26 are also currently under construction.

Continue reading: SpaceX's Starship spotted with strange-looking payload door (full post)

New jaw-dropping Mars images showcase the Red Planet's complex history

Jak Connor | Thu, May 12 2022 1:11 AM CDT

The European Space Agency (ESA) has taken to its website to showcase new images of Mars and its network of long grooves in its surface.

New jaw-dropping Mars images showcase the Red Planet's complex history 03 | TweakTown.com

Posted to the ESA website on April 28, 2022, the space agency explains that the features seen in the above image are involved in a large fault system that is called Tantalus Fossae. The Tantalus Fossae was formed when the nearby Alba Mons volcano rose out of the ground.

The indents on Mars' surface are called "grabens" and are also present on the other side of the volcano. These grabens stretch as far as 621 miles, and can be up to 6 miles wide and 1,100 feet deep. Below is a topographical view of the region, which displays a legend that indicates the depth of the terrain in meters. Red terrain is far lower than the terrain in the northern right-hand corner of the image.

Continue reading: New jaw-dropping Mars images showcase the Red Planet's complex history (full post)

'Glide Breaker' hypersonic missile interceptor in the works by DARPA

Adam Hunt | Thu, May 12 2022 1:02 AM CDT

The Defense Advanced Research Projects Agency (DARPA) has programs to create hypersonic missiles, and programs to destroy them.

'Glide Breaker' hypersonic missile interceptor in the works by DARPA 01 | TweakTown.com

DARPA has completed Phase 1 of its Glide Breaker program, which aims to develop an "interceptor for hypersonic threats." Phase 1 was dedicated to developing and demonstrating a divert and attitude control system (DACS) that would enable an intercepting kill vehicle to destroy a hypersonic weapon threat during its glide phase. Phase 1 saw the fabrication and demonstration of two DACS prototypes that could meet the desired performance objectives.

The agency is now seeking proposals for Phase 2 of the program with a Broad Agency Announcement (BAA). Phase 2 will involve "wind tunnel and flight testing of jet interaction effects." This testing will allow models to be validated and inform future designs. DARPA noted that Phase 1 participation is not a prerequisite for proposals submitted for Phase 2.

Continue reading: 'Glide Breaker' hypersonic missile interceptor in the works by DARPA (full post)

The largest floating solar farm in Europe will start making power soon

Adam Hunt | Wed, May 11 2022 6:59 AM CDT

Europe's largest floating solar farm will be stationed in Portugal and will begin producing power in July of this year.

The largest floating solar farm in Europe will start making power soon 01 | TweakTown.com

The array houses 12,000 solar panels and covers an area the size of four soccer pitches. It was built by Energias de Portugal (EDP) and towed by two tugboats to its mooring on Western Europe's largest artificial lake, the Alqueva reservoir in Portugal. The development is part of Portugal's plan to shift away from imported fossil fuels, particularly those from Russia, the price of which has surged since Russia invaded Ukraine.

According to Miguel Patena, the EDP group director in charge of the solar project, electricity from the panels will cost a third of that from gas-fired plants. The panels will be used to generate hydropower, producing 7.5 gigawatt/hours (GWh) of electricity a year, and will be accompanied by lithium batteries with the capacity to store 2 GWh.

Continue reading: The largest floating solar farm in Europe will start making power soon (full post)

NASA's famous telescope snaps a stunning galactic portrait

Jak Connor | Wed, May 11 2022 6:33 AM CDT

A new image published by the European Space Agency (ESA) has showcased, once again, the capabilities of a famous NASA telescope.

NASA's famous telescope snaps a stunning galactic portrait 01 | TweakTown.com

The image published to the European Space Agency (ESA) website details spiral galaxy M99, which is located approximately 43 million light-years from Earth within the constellation Coma Berenices. The galaxy is described as a "grand design" spiral galaxy, which speaks to M99's "well-defined, prominent spiral arms". Notably, the above image was snapped by Hubble's Wide Field Camera 3 on two separate occasions.

Furthermore, only 10% of spiral galaxies are "grand design" spiral galaxies, and the first set of observations conducted by Hubble concentrated on stellar explosions called novas. The second set of observations focused on establishing a connection between young stars and clouds of cold gas where they form. Researchers aim to develop a deeper understanding of star formation through taking photographs of spiral galaxies such as M99.

Continue reading: NASA's famous telescope snaps a stunning galactic portrait (full post)

WMO says Earth has a '50:50 chance' of breaching temperature milestone

Adam Hunt | Wed, May 11 2022 4:43 AM CDT

The World Meteorological Organization (WMO) has released a new climate update with a warning regarding the world's current trajectory.

Currently, the WMO says there is a 50:50 chance that the annual average global temperature will reach 1.5 degrees Celsius above pre-industrial levels for at least one year out of the next five. In 2015, the chance of temporarily exceeding a 1.5°C increase was near zero percent, rising to 10% between 2017 and 2021, and which now sits at almost 50% for the 2022 to 2026 period.

There is a 93% likelihood that one of the years from 2022 through 2026 will become the warmest on record, surpassing the current record holder, 2016. The five-year average temperatures for 2022-2026 is also projected to have a 93% chance of being higher than those from the previous five-year period of 2017-2021.

Continue reading: WMO says Earth has a '50:50 chance' of breaching temperature milestone (full post)

Neurotech company founder tests his own brain scan helmet on ketamine

Adam Hunt | Wed, May 11 2022 4:22 AM CDT

Ketamine has been the subject of research in recent years, highlighting its potential to treat and cure depression.

The U.S. Food and Drug Administration (FDA) authorized Kernel, a neurotech company that makes brain-scanning helmets, to work with Cybin, a startup investigating psychedelic-based therapeutics, on a ketamine pilot study in October 2021. As part of the tests, Bryan Johnson, the founder of Kernel, wore one of its devices after being administered ketamine.

Johnson received 57.75 milligrams of ketamine via intramuscular injection and wore the helmet to collect brain scans during his "trip." He also wore the helmet during the days leading up to and following his trip for comparison.

Continue reading: Neurotech company founder tests his own brain scan helmet on ketamine (full post)

DARPA is creating nuclear rockets for space, and looking for ideas

Adam Hunt | Wed, May 11 2022 4:01 AM CDT

The Defense Advanced Research Projects Agency (DARPA) is seeking proposals for nuclear thermal rocket (NTR) engines.

DARPA is creating nuclear rockets for space, and looking for ideas 01 | TweakTown.com

The proposals are for the Demonstration Rocket for Agile Cislunar Operations (DRACO) program, covering the design, development, fabrication, and assembly of the engines. The program's goal is to execute a flight demonstration using nuclear thermal propulsion in space in the fiscal year 2026.

Phase 1 of the program focused on preliminary designs for the rocket engine reactor and a conceptual in-orbit demonstration system, and proposals are being sought for Phases 2 and 3. Phase 2 will see the completion of designs for a demonstration system and the validation of an NTR flight engine, while Phase 3 will see the demonstration system built to handle a full-power, on-orbit flight test and the execution of that test.

Continue reading: DARPA is creating nuclear rockets for space, and looking for ideas (full post)

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