With only about 50 million miles (80 million kilometers) left to go in its 293-million-mile (471-million-kilometer) journey, NASA’s Mars 2020 Perseverance rover is nearing its new planetary home. The spacecraft has begun its approach to the Red Planet and in 43 days, on Feb. 18, 2021, Perseverance will blaze through Mars’ atmosphere at about 12,100 mph (19,500 kph), touching down gently on the surface about seven minutes later.
“We’re working on our last adjustments to put Perseverance in perfect position to land in one of the most interesting places on Mars,” said Fernando Abilleira, deputy mission manager at NASA’s Jet Propulsion Laboratory in Southern California. “The team can’t wait to put these wheels in some Martian dirt.”
Built and managed by JPL for NASA, Perseverance will be joining another rover and lander currently at work on Mars, with several orbiters in the skies above. What sets this six-wheeled robot apart?
1. Perseverance is searching for signs of ancient life.
While the surface of Mars is a frozen desert today, scientists have learned from previous NASA missions that the Red Planet once hosted running water and warmer environments at the surface that could have supported microbial life.
“We want Perseverance to help us answer the next logical question: Are there actually signs of past microbial life on Mars?” said Katie Stack Morgan, deputy project scientist at JPL. “This demanding goal means sending the most sophisticated robotic scientist yet to Mars.”
To tackle this question, which is key in the field of astrobiology, Perseverance carries a new suite of cutting-edge science instruments. Two of them will play a particularly important role in the search for potential signs of past life: SHERLOC (short for Scanning Habitable Environments with Raman & Luminescence for Organics & Chemicals), which can detect organic matter and minerals, and PIXL (short for Planetary Instrument for X-ray Lithochemistry), which maps the chemical composition of rocks and sediments. The instruments will allow scientists to analyze these features together at a higher level of detail than any Mars rover has achieved before.
Perseverance will also use some instruments to gather science data from a distance: Mastcam-Z’s cameras can zoom in on rock textures from as far away as a soccer field, while SuperCam will use a laser to zap rock and regolith (broken rock and dust) to study their composition in the resulting vapor. RIMFAX (short for Radar Imager for Mars’ Subsurface Experiment) will use radar waves to probe geological features underground.
2. The rover is landing in a place with a high potential for finding these signs of past microbial life.
Terrain that is interesting to scientists can be challenging to land on. Thanks to new technologies that enable Perseverance to target its landing site more accurately and to autonomously avoid landing hazards, the spacecraft can safely touch down in a place as intriguing as Jezero Crater, a 28-mile-wide (45-kilometer-wide) basin that has steep cliffs, sand dunes, and boulder fields.
More than 3.5 billion years ago, a river there flowed into a body of water about the size of Lake Tahoe, depositing sediments in a fan shape known as a delta. The Perseverance science team believes this ancient river delta and lake deposits could have collected and preserved organic molecules and other potential signs of microbial life.
3. Perseverance is also collecting important data about Mars’ geology and climate.
Context is everything. Mars orbiters have been collecting images and data from Jezero Crater from about 200 miles (322 kilometers) above, but finding signs of ancient life on the surface requires much closer inspection. It requires a rover like Perseverance.
Understanding Mars’ past climate conditions and reading the geological history embedded in its rocks will give scientists a richer sense of what the planet was like in its distant past. Studying the Red Planet’s geology and climate could also give us a sense of why Earth and Mars—despite some early similarities—ended up so different.
4. Perseverance is the first leg of a round trip to Mars.
The verification of ancient life on Mars carries an enormous burden of proof. Perseverance is the first rover to bring a sample caching system to Mars in order to package promising samples for return to Earth by a future mission.
Rather than pulverizing rock the way the drill on NASA’s Curiosity rover does, Perseverance’s drill will cut intact rock cores that are about the size of a piece of chalk and will place them in sample tubes that it will store until the rover reaches an appropriate drop-off location on Mars. The rover could also potentially deliver the samples to a lander that is part of the planned Mars sample return campaign by NASA and ESA (the European Space Agency).
Once the samples are here on Earth, we can examine them with instruments too large and complex to send to Mars, providing far more information about them than even the most sophisticated rover could.
5. Perseverance carries instruments and technology that will help pave the way for human missions to the Moon and Mars.
Among the future-looking technologies on this mission that will benefit human exploration is Terrain-Relative Navigation. As part of the spacecraft’s landing system, Terrain-Relative Navigation will enable the descending spacecraft to quickly and autonomously comprehend its location over the Martian surface and modify its trajectory.
Perseverance will also have more autonomy on the surface than any other rover, including self-driving smarts that will allow it to cover more ground in a day’s operations with fewer instructions from engineers on Earth. This fast-traverse capability will make exploration of the Moon, Mars, and other celestial bodies more efficient for other vehicles.
In addition, Perseverance carries a technology experiment called MOXIE (short for Mars Oxygen In-Situ Resource Utilization Experiment) that will produce oxygen from Mars’ carbon dioxide atmosphere. It will demonstrate a way that future explorers might produce oxygen for rocket propellant as well as for breathing.
Two other instruments will help engineers design systems for future human explorers to land and survive on Mars: The MEDLI2 (Mars Entry, Descent, and Landing Instrumentation 2) package is a next-generation version of what flew on the Mars Science Laboratory mission that delivered the Curiosity rover, while the MEDA (Mars Environmental Dynamics Analyzer) instrument suite provides information about weather, climate, and surface ultraviolet radiation and dust.
Perseverance is also giving a ride to the Ingenuity Mars Helicopter. A technology experiment separate from the rover’s science mission, Ingenuity will attempt the first powered, controlled aircraft flight at another world. If the helicopter is successful in its 30-Martian-day (31-Earth-day) demonstration window, the data could help future explorations of the Red Planet—including those by astronauts—by adding a new aerial dimension.
6. The Perseverance rover embodies the NASA—and the scientific—spirit of overcoming challenges.
Getting the spacecraft to the launch pad during a pandemic, searching for signs of ancient life, collecting samples, and proving new technologies are no easy feats. Nor is a soft touchdown on Mars: Only about 50% of Martian landing attempts, by any space agency, have been successful.
The mission team draws inspiration from the name of its rover, with particular awareness of the challenges the entire world is experiencing at this time. With that in mind, the mission installed a special plate to honor the dedication and hard work of the medical community and first responders around the globe. The team hopes to inspire the entire world, and future explorers, to forge new paths and make discoveries on which the next generation can build.
7. You will get to ride along.
The Mars 2020 Perseverance mission carries more cameras than any interplanetary mission in history, with 19 cameras on the rover itself and four on other parts of the spacecraft involved in entry, descent, and landing. As with previous Mars missions, the Mars 2020 Perseverance mission plans to make raw and processed images available on the mission’s website.
If all goes well, the public will be able to experience in high-definition what it’s like to land on Mars—and hear the sounds of landing for the first time with an off-the-shelf microphone affixed to the side of the rover. Another microphone on SuperCam will help scientists understand the property of rocks the instrument is examining and can also listen to the wind.
If you are among the 10.9 million people who signed up to send your name to Mars, your name is stenciled on one of three silicon chips embedded on a plate on the rover that carries the words “Explore as one” in Morse code.
Jet Propulsion Laboratory
7 things to know about the NASA rover about to land on Mars (2021, January 7)
retrieved 7 January 2021
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Elon Musk's Starlink satellite service is being beta tested in BC – BC News – Castanet.net
It may come as a shock to some but only 36 per cent of rural households in British Columbia have access to reliable high-speed internet service.
That is changing, however, thanks to Elon Musk’s Starlink, satellite internet is now available, depending on where you live.
Starlink is a new high-speed internet service provided by U.S.-based SpaceX, which has launched nearly 900 satellites into a low-Earth orbit over the past year.
If you live within the right coordinates you can now apply to be part of Starlink’s satellite internet beta testing program.
- Province Latitudes (°N)
- Alberta 49.0 – 51.5
- British Columbia 48.4 – 51.7
- Manitoba 49.0 – 51.1
- New Brunswick 45.3 – 47.6
- Nova Scotia 45.0 – 46.0
- Ontario 43.1 – 51.0
- Saskatchewan 49.6 – 50.7
Once approved, users can purchase the necessary hardware which costs $649 for the satellite dish and $129 per month.
SpaceX began the public beta program in October and some subscribers are reporting service speeds of up to 150Mbps. The Canadian Radio-Television and Telecommunication Commission granted Starlink’s operator, SpaceX, a Basic International Telecommunications Service license in October 2020. The license allows SpaceX to provide telecommunication services in Canada but does not allow the company to operate as an internet service provider.
SpaceX has said it will cost U.S. $10 billion or more to build the network but industry analysts have estimated that Starlink could earn as much as $30 billion a year once it is fully operational.
The Starlink satellites float at low-Earth orbit, which cuts down on signal latency and allows the satellites to return to earth with greater ease once they’re decommissioned.
Stargazers have expressed concern that the satellites could obscure the view of the night sky.
How to watch SpaceX launch over 100 satellites on a Falcon 9 rocket tomorrow – CNET
SpaceX will transform one of its Falcon 9 rockets into the space equivalent of a crowded Uber when it launches its Transporter-1 ride-share mission from Cape Canaveral in Florida as soon as Saturday.
The payload for this mission includes a cornucopia of small satellites from government and commercial entities, along with 10 of SpaceX’s ownbroadband satellites.
We learned Thursday that the cargo will include 48 SuperDove satellites for Planet Labs, reportedly bringing the total to a record-breaking 133 satellites in a single launch.
SpaceX itself has not yet confirmed the official number of satellites in the ride-share payload. There’s been some last-minute shifting around after two DARPA satellites were accidentally damaged earlier this month at a processing facility. The Starlink satellites were also a last-minute addition. The payload includes several small spacecraft from Nanoracks and more from the German Aerospace Center (DLR), the US Department of Defense and many others.
The launch was originally scheduled for December, but has been postponed a handful of times.
The Falcon 9 booster will be making its fifth flight and is expected to land on a droneship stationed in the Atlantic not long after flight. SpaceX is also likely to attempt to recover the fairing, or nose cone, a move that’s becoming a more routine part of each mission.
The launch is set for as early as 6:40 a.m. PT (9:40 a.m. ET). The entire mission will be livestreamed as usual by SpaceX. You can follow along below starting about ten minutes before launch.
Coronavirus outbreak declared over at northern BC Coastal GasLink sites – PrinceGeorgeMatters.com
Northern Health now has one less outbreak in the region.
The authority announced this morning (Jan. 22) the COVID-19 outbreak at a pair of Coastal GasLink work sites is now over.
The two sites involved, 7 Mile Lodge and Little Rock Lake Lodge, saw a recorded total of 56 cases after the outbreak was declared on Dec. 19, 2020.
“Northern Health is pleased to announce that Medical Health Officers have declared an end to the COVID-19 outbreak at two workforce accommodation sites on the Coastal Gas Link (CGL) project,” a statement reads.
The previous update on Jan. 8 said there had been an increase of three cases involving the outbreak after its Dec. 31, 2020 outbreak, but none were active.
Northern Health is pleased to announce that Medical Health Officers have declared an end to the COVID-19 outbreak at two workforce accommodation sites on the Coastal Gas Link (CGL) project. https://t.co/tqD87uugJv pic.twitter.com/gkBsB5qY7F
— Northern Health (@Northern_Health) January 22, 2021
As of publication, there has been a recorded total of 3,054 COVID-19 cases in northern B.C. with 508 currently active.
There are 45 people hospitalized with 18 of those currently in critical care, along with 2,472 recoveries since the first infection was detected in March last year.
The region also has seen 54 deaths since the virus hit the area in March.
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