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- Mars may have been wet much later than previously thought, upping the chance the Red Planet could have hosted microbial life
- The region on Mars where the researchers focused their observations is called Arabia Terra on the planet’s northern side
- They determined the area was likely wet between two and three billion years ago, which is considerably later than what most scientists previously thought
Sept 18, 2016: Mars may have been wet much later than previously thought, upping the chance the Red Planet could have hosted microbial life.
Using data from NASA’s Mars Reconnaissance Orbiter, researchers say lakes and streams appeared on Marks a “billion years after a well-documented, earlier era of wet conditions on ancient Mars.” The study appears in the Journal of Geophysical Research, Planets.
“We discovered valleys that carried water into lake basins,” said Sharon Wilson of the Smithsonian Institution, Washington, and the University of Virginia, Charlottesville. “Several lake basins filled and overflowed, indicating there was a considerable amount of water on the landscape during this time.”
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The region on Mars where the researchers focused their observations is called Arabia Terra on the planet’s northern side.
“One of the lakes in this region was comparable in volume to Lake Tahoe,” Wilson said, referring to a California-Nevada lake that holds about 45 cubic miles (188 cubic kilometres) of water. “This particular Martian lake was fed by an inlet valley on its southern edge and overflowed along its northern margin, carrying water downstream into a very large, water-filled basin we nicknamed ‘Heart Lake.’
Researchers say the Heart Lake valley system is about 150 kilometres long. Heart Lake, they say could have held 2,790 cubic kilometres of water, more than Lake Ontario.
The region may not have been wet year round, perhaps depending on seasonal melting of ice and snow to replenish the liquid water.
To come up with a timescale of when the water was there, the researchers examined 22 impact craters and “assessed whether or not the valleys carved into the blankets of surrounding debris ejected from the craters, as an indicator of whether the valleys are older or younger than the craters.”
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They determined the area was likely wet between two and three billion years ago, which is considerably later than what most scientists previously thought.
“The rate at which water flowed through these valleys is consistent with runoff from melting snow,” Wilson said, “These weren’t rushing rivers. They have simple drainage patterns and did not form deep or complex systems like the ancient valley networks from early Mars.”
So while Mars might have been wet later, the question still remains if the planet was habitable.
“A key goal for Mars exploration is to understand when and where liquid water was present in sufficient volume to alter the Martian surface and perhaps provide habitable environments,” said Mars Reconnaissance Orbiter Project Scientist Rich Zurek of NASA’s Jet Propulsion Laboratory, Pasadena, California. “This paper presents evidence for episodes of water modifying the surface on early Mars for possibly several hundred million years later than previously thought, with some implication that the water was enplaced by snow, not rain.” (VOA)
By Nimerta C Sharan
Your monthly round up of the latest lifestyle launches, from luxury indulgences to artisanal creations, here's what you can look forward to :
Exciting news for all handbag lovers, luxury fashion house Louis Vuitton recently launched their limited edition handbags 'Artycapucines - Chapter 3'. Six internationally -- acclaimed artists have transformed the black canvas of the timeless Capucines bag into beautiful art pieces. Each bag will be available in a limited edition of 200 and will be released worldwide at the end of October 2021.
Exciting news for all handbag lovers, luxury fashion house Louis Vuitton recently launched their limited edition handbags. | Photo by Erik Mclean on Unsplash
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Looking for a quick festive fashion fix for you and your loved ones? E-commerce giant AJIO has announced it's hottest fashion sale starting September 30, 2021. The shopping platform has roped in stylista Sonam Kapoor as the face of the sale that will offer more than 2500 brands at discounted prices.
E-commerce giant AJIO has announced it's hottest fashion sale starting September 30, 2021. | Photo by Mitchell Luo on Unsplash
The country's leading design house, Good Earth, in collaboration with textile designer Madeline Weinrib will present its collection of 'butah' motif dinnerware and home textiles at the Metropolitan Museum of Arts, New York. The 'Heirloom Project' that honours diverse Islamic design techniques will display curated products from across the globe.
The 'Heirloom Project' that honours diverse Islamic design techniques will display curated products from across the globe. | Photo by Jean Vella on Unsplash
Sweet dreams are made of this! Iconic French patisserie Laduree has opened its first Indian outpost at Delhi's upscale Khan Market. Spread over three floors, the bakery currently has twelve macaron flavours, their signature pastries and tea cakes and other brunch and high-tea items on the menu. Bon appetit.
Iconic French patisserie Laduree has opened its first Indian outpost at Delhi's upscale Khan Market. | Pixabay
Bright And Beautiful
Raw Mango's latest festive edit 'Moomal' goes live on their website on September 26, 2021. Inspired by the richness and diversity of Rajasthan, the collection consists of organza and silk saris and shararas, gota lehengas and kurtas and embroidered odhnis. The colours and silhouettes are just right for the upcoming festive season. (IANS/ MBI)
Raw Mango's latest festive edit 'Moomal' goes live on their website on September 26, 2021. | Photo by Souravi Sinha on Unsplash
Keywords: Lifestle, AJIO, sale, Deepika PAdukone, saris, Motifs, artisan, art
Actress Kangana Ranaut has talked about how her weight adjustments for her latest 'Thalaivii' that "messed up many things" in her body and left her with "permanent stretch marks". For her role in the film, based on the life of late Tamil Nadu Chief Minister and former actress J. Jayalalithaa, Kangana had to gain 20kg and undergo major physical transformation several times.
She took to Instagram to share her experience, detailing that doing all that over the six months period left her with "permanent stretch marks". "Gaining 20 kgs in 6 months and loosing it all within 6 months that too in my thirties messed up many things in my bodya I also have permanent stretch marks as well but art comes to life with a price and more often than not price is the artist him/herself," she wrote.
"Thalaivii" showcases the varied aspects of Jayalalithaa's life, tracing her journey as an actress at a young age to becoming the face of Tamil cinema, as well as the rise of the revolutionary leader who changed the course of the state's politics. Talking about her upcoming works, Kangana currently has 'Dhaakad'.
She is also shooting for her next 'Tejas', where she plays a fighter pilot. The Indian Air Force was the first of the country's defence forces to induct women into combat roles in 2016. The film takes inspiration from the landmark event. 'Tejas' is directed by debutant Sarvesh Mewara. The film will be RSVP's second film which pays a tribute to the Indian military after the immensely successful film "Uri: The Surgical Strike" which was released in January 2019. (IANS/ MBI)
Keywords: Kangana Ranaut, Thalaivii, bollywood, stretc marks, actress, tamil cinema
Signal's encrypted messaging app continues to be down on Monday after facing global outage on Sunday. The firm said it is working to fix it. "Hold tight, folks! Signal is currently down, due to a hosting outage affecting parts of our service. We're working on bringing it back up," the firm said in a tweet on Sunday.
The status website says the encrypted messaging app is "experiencing technical difficulties" and many people are also getting an in-app error message that says the same thing. Signal allows for secure and encrypted video, voice and text communication, but users are unable to send any messages.
According to Downdetector.com, users started reporting outages around 11:05 PM Eastern Standard Time and it appears to be affecting people around the world. Comments shared on Downdetector.com indicates that Signal was down for users from India, US, Germany, New Zealand, Netherlands, Australia, Brazil and many other countries.
"Down in Midwest USA. Signal was started by people connected to which secret 3-letter organization? (Look it up) Yep, that's right! An app disguised a privacy app to trick you into sharing more private information than you would with another messaging app," a user said. "I think Signal is having a rough day. Good luck, Team Signal. I'm sure you'll have it sorted out in a snap," said another. The encrypted messaging service has climbed to the top spot in the free apps category of the App Store in multiple countries, including India. (IANS/ MBI)
Keywords: Signal, app, encrypted, messages, outage, down