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Science, Space & Robotics Posts - Page 3

NASA provides further details of the ESA's lander crash

By: Lana Jelic | More News: Science, Space & Robotics | Posted: Oct 28, 2016 4:25 pm

NASA has provided new details of the scene near the Martian equator where Europe's Schiaparelli test lander hit the surface last week.

 

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The new images show three impact locations within about 1.5 kilometers (0.9 miles) from each other.

 

A dark, roughly circular feature is interpreted as where the lander itself struck. A pattern of rays extending from the circle suggests that a shallow crater was excavated by the impact, as expected given the premature engine shutdown. About 1.4 kilometers (0.8 miles) eastward, an object with several bright spots surrounded by darkened ground is likely the heat shield. About 0.9 kilometers (0.6 miles) south of the lander impact site, two features side-by-side are interpreted as the spacecraft's parachute and the back shell to which the parachute was attached. Additional images to be taken from different angles are planned and will aid interpretation of these early results.

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NASA publishes a stunning 4K video of the Space Station

By: Lana Jelic | More News: Science, Space & Robotics | Posted: Oct 27, 2016 8:28 pm

NASA has published a stunning video of the International Space Station. The footage was shot in Ultra High Definition (4K) using a fisheye lens for extreme focus and depth of field.

 

 

At the beginning of the video, you can see the breathtaking view of Earth from about 400 kilometers. The rest of the video takes us on a tour through the Station, ending with another glance at our planet.

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Scientists think they've received signals from aliens

By: Anthony Garreffa | More News: Science, Space & Robotics | Posted: Oct 26, 2016 11:11 am

You better get into all of your games and save them, do your back ups and run into your doomsday bunker - because scientists writing in the Publications of the Astronomical Society of the Pacific have found unusual signals coming from a group of stars that are "signals probably from extraterrestrial intelligence".

 

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The scientists said that these signals "have exactly the shape of a signal predicted in the previous publication and are therefore in agreement with this [extraterrestrial intelligence] hypothesis". Their paper is called "Discovery of peculiar periodic spectral modulations in a small fraction of solar type stars," which talks about their hypothesis that these signals are from some form of ETI, or alien intelligence.

 

E.F. Borra and E. Trottier, the paper's authors, write: "The fact that they are only found in a very small fraction of stars within a narrow spectral range centered near the spectral type of the sun is also in agreement with the ETI hypothesis". They added: "At this stage, this hypothesis needs to be confirmed with further work. Although unlikely, there is also a possibility that the signals are due to highly peculiar chemical compositions in a small fraction of galactic halo stars".

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NASA solved the secret of ESA's missing Mars lander

By: Lana Jelic | More News: Science, Space & Robotics | Posted: Oct 24, 2016 5:31 pm

The ESA lost contact with its Schiaparelli lander shortly before it was supposed to land on Mars on October 19th, and now the mystery of what happened to it has been resolved. Like we previously noted, there was a chance that the lander ditched its parachute too early and crashed onto the surface of Red Planet.

 

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NASA's Mars Reconnaissance Orbiter has identified new markings on the surface of the Red Planet that are believed to be related to Europe's Schiaparelli test lander. The new image shows a bright spot that may be Schiaparelli's parachute, and a larger dark spot interpreted as resulting from the impact of the lander itself following a much longer free fall than planned after thrusters switched off prematurely.

 

The location of the bright spot is within the planned landing area and the dark spot may be where the lander reached the surface and exposed darker ground.

Continue reading 'NASA solved the secret of ESA's missing Mars lander' (full post)

Elon Musk describes his vision for colonization of Mars

By: Lana Jelic | More News: Science, Space & Robotics | Posted: Oct 24, 2016 2:28 pm

Elon Musk held an AMA or "Ask Me Anything" session on Reddit, where he answered questions strictly related to SpaceX, and not his other companies. The session came almost a month after his presentation at the International Astronautical Conference in Guadalajara, Mexico on September 27th, where he gave details about SpaceX's plans for the colonization of Mars.

 

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Many users wanted to know about the rockets that SpaceX will use to get first people to Mars and Interplanetary Transport System. Musk pointed out that the ITS is designed for a maximum acceleration of 20 Gs, but the spaceship would be limited to around 5 G's nominal, but able to take peak loads 2 to 3 times higher without breaking up.

 

Musk also believes that the Falcon 9 rockets will be used indefinitely.

 

Actually, I think the F9 boosters could be used almost indefinitely, so long as there is scheduled maintenance and careful inspections. Falcon 9 Block 5 - the final version in the series - is the one that has the most performance and is designed for easy reuse, so it just makes sense to focus on that long term and retire the earlier versions. Block 5 starts production in about 3 months and initial flight is in 6 to 8 months, so there isn't much point in ground testing Block 3 or 4 much beyond a few reflights.

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Do you have questions for Elon Musk? Now is time to ask

By: Lana Jelic | More News: Science, Space & Robotics | Posted: Oct 23, 2016 8:34 pm

Elon Musk will host an AMA or "Ask Me Anything" session on Reddit today, October 23rd, at 6 PM EDT (3 PM PDT). Standard subreddit rules will apply in the AMA thread and the users have been warned to follow the rules and not to ask questions already submitted.

 

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The questions and answers will be on the SpaceX subreddit, meaning you can ask questions related to SpaceX, and not Tesla Motors or SolarCity. Musk also pointed out that he will be answering SpaceX related questions.

 

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ISS crew arrives at Space Station after two-day trip

By: Lana Jelic | More News: Science, Space & Robotics | Posted: Oct 21, 2016 8:35 pm

NASA astronaut Shane Kimbrough and cosmonauts Sergey Ryzhikov and Andrey Borisenko of the Russian space agency Roscosmos have arrived at the International Space Station after a two-day trip.

 

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Their Soyuz MS-02 spacecraft docked with the Station's Poisk module at 5:52 AM EDT. When hatches between the Soyuz and Space Station opened at 8:20 AM EDT, the three crew members joined Expedition 49 Commander Anatoly Ivanishin of Roscosmos and Flight Engineers Kate Rubins of NASA and Takuya Onishi of the Japan Aerospace Exploration Agency, who have been aboard ISS since July. The International Space Station now has six occupants.

 

Kimbrough, Ryzhikov, and Borisenko will spend a little more than four months aboard the Space Station, and their return to Earth is scheduled for late February. The crew members will contribute to more than 250 research experiments ongoing aboard the space station, in diverse fields such as biology, Earth Science, human research, physical sciences and technology development.

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Cassini's final year of its epic voyage to Saturn

By: Lana Jelic | More News: Science, Space & Robotics | Posted: Oct 21, 2016 6:23 pm

After more than 12 years studying Saturn, its rings and moons, NASA's Cassini spacecraft has entered the final year of its epic voyage. The conclusion of the historic scientific odyssey is planned for September 2017.

 

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Now, the Cassini spacecraft revealed dramatic seasonal changes in the atmospheric temperature and composition of Saturn's largest moon, Titan. The images show a vortex in the upper atmosphere over the south pole. Cassini also discovered gasses in this vortex that are otherwise quite rare in Titan's atmosphere.

 

Athena Coustenis, a member of Cassini's Composite Infrared Spectrometer team at the Observatoire de Paris, explained the importance of this discovery.

 

Cassini's long mission and frequent visits to Titan have allowed us to observe the pattern of seasonal changes on Titan, in exquisite detail, for the first time. We've had the chance to witness the onset of winter from the beginning and are approaching the peak time for these gas production processes in the southern hemisphere. We are now looking for new molecules in the atmosphere above Titan's south polar region that have been predicted by our computer models. Making these detections will help us understand the photochemistry going on.

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Landing on Mars didn't go as planned

By: Lana Jelic | More News: Science, Space & Robotics | Posted: Oct 20, 2016 8:35 pm

The Trace Gas Orbiter (TGO), which is in Mars' orbit, received the data sent from Schiaparelli lander, the ESA confirmed on Wednesday. However, the fate of the Schiaparelli lander, named after the Italian astronomer from the 19th century, is currently still unknown.

 

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Early indications from both the radio signals captured by the Giant Metrewave Radio Telescope (GMRT), an experimental telescope array located near Pune, India, and from orbit by ESA's Mars Express, suggested the module had successfully completed most steps of its 6-minute descent through the Martian atmosphere. But the signals stopped shortly before the module was expected to touch down on the surface. It is still unclear if the Schiaparelli lander survived the landing or crashed.

 

"Following yesterday's events we have an impressive orbiter around Mars ready for science and relay support for the ExoMars rover mission in 2020," said Jan Wörner, ESA's Director General.

 

The Schiaparelli lander is 577 kg heavy and designed for Mars' rough surface, but it is possible that the module ditched the parachute too early and crashed onto the surface.

Continue reading 'Landing on Mars didn't go as planned' (full post)

Mars' lander fate is unclear, but signs are not good

By: Lana Jelic | More News: Science, Space & Robotics | Posted: Oct 19, 2016 10:24 pm

The Trace Gas Orbiter (TGO) of ESA's ExoMars 2016 has successfully performed the long 139-minute burn required to be captured by Mars and entered an elliptical orbit around the Red Planet.

 

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The TGO is now on its planned orbit around Mars, accompanied by the 13-year old Mars Express orbiter.

 

However, contact has not yet been confirmed with the mission's test lander from the surface. The Schiaparelli lander was programmed to autonomously perform an automated landing sequence, but the signal stopped shortly before landing.

 

Paolo Ferri, ESA's head of operations said it is too soon to jump to conclusions but "it's clear that these are not good signs."

Continue reading 'Mars' lander fate is unclear, but signs are not good' (full post)

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