Tag Archives: Mars

Space Travel / Exploration

Curiosity discovers pure sulfur rocks, continues to explore Mount Sharp on Mars

From the JPL, with thanks to Alexis for the tip.

https://www.jpl.nasa.gov/news/nasas-curiosity-rover-discovers-a-surprise-in-a-martian-rock

Curiosity discovers pure sulfur rocks, continues to explore Mount Sharp on Mars

Among several recent findings, the rover has found rocks made of pure sulfur — a first on the Red Planet.

Scientists were stunned on May 30 when a rock that NASA’s Curiosity Mars rover drove over cracked open to reveal something never seen before on the Red Planet: yellow sulfur crystals.

Since October 2023, the rover has been exploring a region of Mars rich with sulfates, a kind of salt that contains sulfur and forms as water evaporates. But where past detections have been of sulfur-based minerals — in other words, a mix of sulfur and other materials — the rock Curiosity recently cracked open is made of elemental, or pure, sulfur. It isn’t clear what relationship, if any, the elemental sulfur has to other sulfur-based minerals in the area.

While people associate sulfur with the odor from rotten eggs (the result of hydrogen sulfide gas), elemental sulfur is odorless. It forms in only a narrow range of conditions that scientists haven’t associated with the history of this location. And Curiosity found a lot of it — an entire field of bright rocks that look similar to the one the rover crushed.

Pan around this 360-degree video to explore Gediz Vallis channel, the location where NASA’s Curiosity Mars rover discovered sulfur crystals and drilled its 41st rock sample. The images that make up this mosaic were captured by the rover’s MastCam in June.

Credit: NASA/JPL-Caltech/MSSS

“Finding a field of stones made of pure sulfur is like finding an oasis in the desert,” said Curiosity’s project scientist, Ashwin Vasavada of NASA’s Jet Propulsion Laboratory in Southern California. “It shouldn’t be there, so now we have to explain it. Discovering strange and unexpected things is what makes planetary exploration so exciting.”

It’s one of several discoveries Curiosity has made while off-roading within Gediz Vallis channel, a groove that winds down part of the 3-mile-tall (5-kilometer-tall) Mount Sharp, the base of which the rover has been ascending since 2014. Each layer of the mountain represents a different period of Martian history. Curiosity’s mission is to study where and when the planet’s ancient terrain could have provided the nutrients needed for microbial life, if any ever formed on Mars.

Astronomy News

Rover Landing Site Named for Butler

Rover Landing Site Named for Butler

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Octavia E. Butler Landing (by NASA)

NASA has named the landing site of the Mars 2020 Perseverance rover after SF author Octavia E. Butler (1947-2006). The rover was launched from Cape Canaveral FL on July 30, 2020 and landed in Jezero Crater, Mars on February 18, 2021. The mission will spend at least one Mars year (two Earth years) exploring the landing site region.

For more information, see NASA’s website.

Space Travel / Exploration

Missions to Mars

Mars, the planet most likely to stir the blood of an SF fan!

And it’s a real busy place. Three nations took advantage of the close orbit of Mars in 2020 to send missions to the Red Planet. NASA’s mission to look for signs of life is already underway. https://www.nasa.gov

The press is covering the Perseverance mission, almost to the exclusion of the other two which are equally interesting.

The Chinese Satellite is in parking orbit today. It has a lovely name taken from the title of an ancient poem: Tianwen, which means Quest for Heavenly Truth. It will also be looking for water and signs of life.  https://www.ctvnews.ca/sci-tech/china-s-mars-craft-enters-parking-orbit-before-landing-rover-1.5321743
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The United Arab Emirates has a satellite in orbit since the ninth of February. It’s called Hope, and will be focussed on learning more about the atmosphere, and possibly understanding how the climate changed.

It’s amazing that all three launched in 2020 have succeeded, so far. There have been more failures than successes over the years.

Adding to the drama, there are probably 8 derelict satellites in orbit also, and their exact positions are not known.

Astronomy News

Ham radio signals from Mars

Space Weather News for Feb. 17, 2021
https://spaceweather.com
https://www.spaceweatheralerts.com

HAM RADIO SIGNALS FROM MARS: Ham radio operators are doing something that until recently only big Deep Space Networks could do. They’re listening to radio signals from Mars. The “loud and audible” transmissions come from spacecraft orbiting the Red Planet. Some hams are hoping to detect NASA’s Perseverance rover as it touches down later this week. Find out how it’s done on today’s edition of Spaceweather.com.

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Astronomy News

3D IMAGES OF MARS

Warning: Mars is about to leap out of your computer screen.

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Space Weather News for Nov. 17, 2020
https://spaceweather.com
https://www.spaceweatheralerts.com

3D IMAGES OF MARS: Warning: Mars is about to leap out of your computer screen. European astronomers have just released some of the best photos of Mars ever taken from Earth. They’ve assembled the images into a crazy-good 3D animation of the Red Planet spinning on its axis. See for yourself on today’s edition of Spaceweather.com.

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Above: This photo of Mars taken last month from Pic du Midi is one of many used to create a best-ever 3D animation of the Red Planet.

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Astronomy News

A DARK STREAK JUST APPEARED ON MARS

Space Weather News for Oct. 25, 2020
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https://www.spaceweatheralerts.com

A DARK STREAK JUST APPEARED ON MARS: Amateur astronomers are monitoring something new on Mars. A dark streak has just appeared near one of the Red Planet’s giant extinct volcanoes, Arsia Mons. It appears to be a cloud, but the jury’s still out. Visit today’s edition of Spaceweather.com for images and more information.

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Above: A 600 km long dark streak, observed by amateur astronomers (left) and projected onto an image from Mars Orbiter (right). Credit: Maximilian Teodorescu.

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Astronomy News

A signal from Mars

This week, an amateur radio operator in British Columbia picked up a signal from Mars

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Space Weather News for Oct. 6, 2020
https://spaceweather.com
https://www.spaceweatheralerts.com

RADIO SIGNALS FROM MARS: This week, an amateur radio operator in British Columbia picked up a radio signal … from Mars. It came from NASA’s Mars Reconnaissance Orbiter flying just 274 km above the Red Planet’s surface. Such a detection is possible because, right now, Mars is unusually close to Earth. Want to hear what it sounds like? Visit today’s edition of Spaceweather.com.

Aurora alerts: Sign up for Space Weather Alerts and receive a text message when auroras appear in your area.

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Above: This home-brew radio antenna in Roberts Creek, BC, is picking up signals from Mars Reconnaissance Orbiter. Credit: Scott Tilley.
 

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Astronomy News

MARS IS NOW BRIGHTER THAN SIRIUS

Last week, I saw Mars rise over the horizon, and wow, was it ever bright! And red! –CPL

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Space Weather News for August 21, 2020
https://spaceweather.com
https://www.spaceweatheralerts.com

MARS IS NOW BRIGHTER THAN SIRIUS: Mars is approaching Earth for one of its best apparitions since 2003. Earlier this week, the Red Planet crossed an important threshold. It is now brighter than Sirius, the brightest star in the sky. Amateur astronomers are capturing amazing images of Mars using ordinary telescopes, and the best is yet to come. Visit Spaceweather.com for observing tips.

Aurora alerts: Sign up for Space Weather Alerts and receive a text message when auroras appear in your area.
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Above: One hour of Mars on Aug. 18, 2020, as seen through a 14-inch telescope. Credit: Maximilian Teodorescu of Magurele, Romania

APPROACHING MARS: By the time you finish reading this sentence, you’ll be 40 km closer to Mars.

Earth and Mars are converging for a close encounter this Fall, one of the best since 2003, and their separation is rapidly shrinking–negative 8 km/s as of Aug. 21st. You are literally approaching the Red Planet. Just this week the brightness of Mars surpassed that of Sirius, the brightest star in the sky. Suddenly, Mars is almost bright enough to see in daylight and an easy target for backyard telescopes.

The best is yet to come. By the night of closest approach on Oct. 6th (0.4149 AU), Mars will more than double in brightness again, outshining everything in the night sky except Venus and the Moon. Throughout this apparition, the south pole will remain tilted toward Earth, giving observers a good view of the breakup of the ice cap as Martian spring turns into summer.

Astronomy News

Perseverance–Launching for Mars

https://mars.nasa.gov/mars2020/

Mission: To  seek signs of ancient life and collect rock and soil samples for possible return to Earth.

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  • Mission Name: Mars 2020
  • Rover Name: Perseverance
  • Main Job: The Perseverance rover will seek signs of ancient life and collect rock and soil samples for possible return to Earth.
  • Launch Window: July 20 – Aug. 11, 2020
  • Launch Location: Cape Canaveral Air Force Station, Florida
  • Landing: Feb. 18, 2021
  • Landing Site: Jezero Crater, Mars
  • Mission Duration: At least one Mars year (about 687 Earth days)
  • Tech Demo: The Mars Helicopter is a technology demonstration, hitching a ride on the Perseverance rover.
  • Fact Sheet
  • Launch Press Kit

READ MORE

Astronomy News

Ancient Mars may have once had rings, then moons, then rings …

Ancient Mars may have once had rings, then moons, then rings …

Like a phoenix rising from its ashes, scientists believe one of Mars’ current moons, Phobos, may have been born from a ring of dust left by former versions of itself.

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By Caitlyn Buongiorno  |  Published: Tuesday, June 2, 2020
RELATED TOPICS: MARS | MOONS
Marsringsmoons
Someday, Mars’ moon Phobos will slip past a certain point in its degrading orbit and get ripped apart by tidal forces, forming a ring. This illustration depicts Phobos midway through that process, overlooking the Red Planet. Astronomy: Ron Miller

For a long time after their discovery in 1877, scientists assumed Mars’ two puny moons — Deimos and Phobos — were captured asteroids. This belief persisted until evidence revealed both moons formed at the same time as the Red Planet itself, and that the smaller one, Deimos, has a mysteriously tilted orbit. However, it wasn’t until 2017 that researchers put forth a new idea that could explain why Deimos’ orbit is slanted by 2 degrees.

“The fact that Deimos’ orbit is not exactly in plane with Mars’ equator was considered unimportant,” said SETI Institute research scientist and lead author Matija Ćuk in a press release. “But once we had a big new idea and we looked at it with new eyes, Deimos’ orbital tilt revealed a big secret.”

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