Pic of the Week: The Helicopter’s Shadow

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Image (Credit): Shadow of the Ingenuity Helicopter on Mar’s surface. (NASA/JPL-Caltech)

This week’s image, and the related animated gif, are from the navigation camera aboard NASA’s Ingenuity Mars Helicopter during its 25th flight on April 18, 2022 over the surface of Mars. Here is a little more information from NASA’s Jet Propulsion Laboratory (JPL):

The first frame of the clip shows the view about one second into the flight. After reaching an altitude of 33 feet (10 meters), the helicopter heads southwest, accelerating to its maximum speed in less than three seconds. Ingenuity first flies over a group of sand ripples then, about halfway through the video, several rock fields. Finally, relatively flat and featureless terrain appears below, making a good landing spot. The video of the 161.3-second flight was speeded up approximately five times, reducing it to less than 35 seconds.

Ingenuity’s navigation camera has been programmed to deactivate whenever the rotorcraft is within 3 feet (1 meter) of the surface. This helps ensure any dust kicked up during takeoff and landing won’t interfere with the navigation system as it tracks features on the ground.

Space Quote: NASA and ESA Cooperation

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Image (Credit): European Space Agency (ESA) headquarters in Paris. (ESA)

“From understanding our changing planet to exploring Mars, I hugely value the cooperation we have with NASA…By contributing key European hardware and services to exciting programmes such as Artemis and Mars Sample Return, we are building Europe’s autonomy while also being a reliable partner.”

-Statement by ESA’s Director General Josef Aschbacher as part of the June 14-15 ESA Council meeting. See the press release, “N° 30–2022: From the Earth to the Moon and on to Mars – ESA and NASA take decisions and plan for the future.” for more on the meeting. The document also discusses plans to place a European astronaut on the Moon.

Astra Rocket Failure Impacts TROPICS Mission

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Image (Credit): Astra rocket for the TROPICS satellites. (Astra)

This weekend we witnessed another example that space operations are risky. On Sunday, Astra’s Rocket LV0010 launched from Cape Canaveral but was unable to place two satellites into orbit. The satellites were part of NASA’s TROPICS-1 mission. The main issue was the engine on the upper portion of the rocket.

As described by Astra on its website, the launch of the Time-Resolved Observations of Precipitation structure and storm Intensity with a Constellation of Smallsats (TROPICS) mission was awarded to Astra in February of this year and “consists of a constellation of six small satellites that will observe tropical cyclones, aiming to improve the scientific community’s understanding of these dangerous weather events.” This was the first of three such launches, leaving four satellites untouched and ready to go once Astra, NASA, and the Federal Aviation Administration figure out what happened this weekend.

This is not the first NASA mishap. Back in February, Rocket LV0008 (also launched from Cape Canaveral) suffered an in-flight anomaly during stage separation. As a result, NASA’s Educational Launch of Nanosatellites (ELaNa 41) mission to place CubeSats into orbit failed. CubeSats are miniature satellites designed to provide a low-cost plat­form for NASA missions.

Astra is a relatively new entrant to in the commercial space industry having been founded in 2016. Let’s hope the lessons learned from this mishap and persistence will allow the company to thrive in this competitive and risky industry.

Space Quote: The Search for UAPs

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Image (Credit): Artist’s impression of UFOs. (iStock)

“NASA believes that the tools of scientific discovery are powerful and apply here also…We have access to a broad range of observations of Earth from space – and that is the lifeblood of scientific inquiry. We have the tools and team who can help us improve our understanding of the unknown. That’s the very definition of what science is. That’s what we do.

– Statement by Thomas Zurbuchen, associate administrator for science at NASA Headquarters in Washington, DC. This was part of NASA’s statement committing to a 9-month study of Unidentified Aerial Phenomena, also known as UFOs. You can read the full press release from NASA here.

Pic of the Week: Dazzling Star Cluster

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Image (Credit): Globular cluster Liller 1 (ESA/Hubble & NASA, F. Ferraro)

The image this week is from the NASA/ESA Hubble Space Telescope. It shows a cluster of old and young stars in the globular cluster Liller 1 located within the bulge of the Milky Way Galaxy. Here is a full explanation from NASA:

The muted red tones of the globular cluster Liller 1 are partially obscured in this image by a dense scattering of piercingly blue stars. In fact, it is thanks to Hubble’s Wide Field Camera 3 (WFC3) that we are able to see Liller 1 so clearly in this image, because the WFC3 is sensitive to wavelengths of light that the human eye cannot detect. Liller 1 is only 30 000 light-years from Earth — relatively neighbourly in astronomical terms — but it lies within the Milky Way’s ‘bulge’, the dense and dusty region at our galaxy’s centre. Because of that, Liller 1 is heavily obscured from view by interstellar dust, which scatters visible light (particularly blue light) very effectively. Fortunately, some infrared and red visible light are able to pass through these dusty regions. WFC3 is sensitive to both visible and near-infrared (infrared that is close to the visible) wavelengths, allowing us to see through the obscuring clouds of dust, and providing this spectacular view of Liller 1. 

Liller 1 is a particularly interesting globular cluster, because unlike most of its kind, it contains a mix of very young and very old stars. Globular clusters typically house only old stars, some nearly as old as the Universe itself. Liller1 instead contains at least two distinct stellar populations with remarkably different ages: the oldest one is 12 billion years old and the youngest component is just 1-2 billion years old. This led astronomers to conclude that this stellar system was able to form stars over an extraordinary long period of time.