Archive for the ‘Planetary science’ Category

Weekly Links

Down to Earth

Andy Weir, author of the smash hit The Martian released his second novel, Artemis.

Sierra Nevada released video of last week’s successful glide flight of their Dream Chaser space plan:

A long-lost Omega astronaut watch from the Apollo era has been recovered and returned to the Smithsonian.

In Orbit

The Cygnus cargo freighter that launched last week, arrived at the ISS successfully on November 14.

Two rocket launches last week:

Around the Solar System

A new study in Nature analyzes Pluto’s hazy atmosphere and offers an explanation for the planet being colder than expected ( minus 300 deg F instead of minus 280 deg F).

Out There

A newly discovered exoplanet, Ross 128 b, is only 11 light years away and could be in the habitable zone of the red dwarf star it orbits.

Weekly Links

Down to Earth

Skylab and Space Shuttle astronaut Paul Weitz has died at 85 years old.

The 2018 US Olympic Snowboard team will wear uniforms inspired by NASA spacesuits.

Saudi Arabia has agreed to invest $1 billion dollars in Virgin Galactic.

In Orbit

In rocket news, there were only two orbital launches since my last post on October 21:

Around the Solar Systems

NASA’s robotic probe Dawn has received an official mission extension to stay in orbit around the asteroid Ceres.

Out There

Astronomers at an observatory in Chile have discovered an unusual exoplanet orbiting a dwarf star. The planet is larger than Jupiter and is 25% the size of its host star, the highest known planet-to-star ratio yet discovered.

The Pan-STARRS-1 observatory in Hawaii detected a small rocky body hurtling into our solar system from interstellar space. The asteroid (or should it be called something else?) poses no risk to Earth. Follow the link for a cool animation of its orbit.

Weekly Links

Down to Earth

Retired NASA astronaut Terry Virts has published a “coffee table book” of images he took while aboard the ISS during Expeditions 42 and 43.

The 2017 Nobel Prize in Physics was awarded for the discovery of gravitational waves by the LIGO team.

Canadian company MDA has acquired DigitalGlobe and the new merged corporation will be changing their name to Maxar Technologies. MDA is the company that build the Canadarms and DigitalGlobe is a major provider of orbital imagery for users like Google.

In Orbit

Three rocket launches since my last post. All of them occurred today, October 9th:

  • China launched a Long March 2D rocket carrying a Venezuelan satellite.
  • SpaceX launched a Falcon 9 rocket carrying 10 new communication satellites for Iridium.
  • Japan launched an H-2A rocket carrying a native navigation satellite.

Things have been quite busy up on the ISS. Astronauts Mark Vande Hei and Randy Bresnik executed the first of a series of spacewalks last week to maintain the station’s robotic arm. They will go out again tomorrow, October 10th, to continue the work. Here are a few pictures from last week’s EVA:

NASA has announced plans to keep the Bigelow Expandable Activity Module (BEAM) on the ISS for longer than planned and use it as a logistics module.

Out There

A recent study of “Tabby’s Star” using NASA’s orbiting observatories Spitzer and Swift has a new theory for the unexplained dips in brightness: dust. The new hypothesis is compelling because the telescopes detected differences in the dimming at different wavelengths, which implies something transparent like dust.

Weekly Links

Down to Earth

SpaceX’s CEO Elon Must tweeted this fun video compilation of the companies many rocket failures over the past few years. You can tell they are learning a lot of lessons that have led to their recent successes.

Meanwhile, their Dragon capsule which has been docked to the International Space Station for about a month will be returning to Earth Sunday.

In Orbit

Two rocket launches since my last post, both from Baikonaur Kazakhstan:

First, a Russian Proton rocket launched a Latin American communications satellite.

Then a Soyuz rocket carried three crew members to the International Space Station: Alexander Misurkin, Mark Vande Hei, and Joe Acaba. They joined their Expedition 53 crewmates early last week to make a full crew of 6 onboard.

Around the Solar System

The incomparable Cassini probe ended its mission this past Friday with a planned suicide dive into the clouds of Saturn. The probe was launched in 1997 and was one of the most successful planetary missions of all time, but it had finally run out of fuel. This Ars Technica article has a brief photo gallery of Cassini’s greatest hits.

One of Cassini’s last acts was a flyby of the moon Titan. Here are some pictures.

And here’s a gallery of photos from mission control at JPL during Cassini’s last day.

Or if you prefer silly things, here is actor Robert Picardo singing an opera parody about Cassini:

Weekly Links

I’m back from my own personal August recess and catching up on almost a month of space news. Here’s your headline dump for August 14 to September 9! A lot has happened

Down to Earth

The Trump Administration has named Oklahoma Congressman Jim Bridenstine as their nominee for NASA administrator.

The Chinese and European astronauts conducted a joint survival training exercise off the coast of China.

Sierra Nevada Corporation conducted a “captive carry” flight of their Dream Chaser spaceplane.

Last week an ESA Ariane 5 rocket had a pad abort. The agency is still investigating.

In Orbit

The Dragon capsule launched two days earlier docked with the ISS on August 16th.

The day after the cargo. arrival, cosmonauts Fyodor Yurchikhin and Sergey Ryazanskiy conducted a successful spacewalk to do space station maintenance as well as some small satellites deployments.

Then on September 3rd a Soyuz returned to Earth, safely carrying Jack Fischer, Peggy Whitson, and Fyodor Yurchikhin to the steppes of Kazakhstan. Both Yurchikhin and Whitson now have accumulated over 600 days in space.

Meanwhile on the ground, a dedicated team of flight controllers was riding out Hurricane Harvey in Houston’s Mission Control Center to ensure the successful undocking and return of the crew.

Speaking of hurricanes, the ISS crew has taken some incredible imagery of Irma has it makes its way across the Caribbean and now Florida.

Lots of launches while I was out. Here’s a worldwide rundown:

Around the Solar System

Congratulations to the engineers and scientists on the New Horizons project; the International Astronomical Union has selected many of their original choices for features on Pluto as official names!

Good news for Mars enthusiasts: there is new talk at NASA of planning a robotic Mars sample return mission for the middle of the 2020s.

Weekly Links

Down to Earth

Leonardo DiCaprio is going to produce a new TV series based on The Right Stuff.

NASA’s new TDRS-M satellite had a mishap during pre-flight processing. Launch has been rescheduled while repairs are conducted.

Virgin Galactic conducted another drop test of their SpaceShipTwo vehicle at the Mojave Air and Space Port.

NASA’s fourteenth crew of the Human Exploration Research Analog (HERA) program started their 45-day mission yesterday.

Rocket startup Vector Space Systems conducted a test launch of their suborbital rocket on Thursday. Here’s a short video of liftoff.

In Orbit

The International Space Station crew is back up to 6 after a new Soyuz launched from Kazakhstan and docked just a few hours later. The three new ISS crew members, Sergey Ryazanskiy, Paolo Nespoli, and Randy Bresnik, are all spaceflight veterans.

There are now 5 active Twitter users on ISS, sharing their thoughts, activities, and views with us! Check out their posts at this feed.

In addition to the Soyuz launch, the only other rocket launch in the past two weeks was a European Space Agency Vega rocket. The rocket launched on August 2 from French Guiana carrying two earth observing satellites.

Around the Solar System

In case you had forgotten that there are two active NASA rovers on the surface of Mars, here are some beautiful panoramas from Opportunity, on the edge of Endeavour crater.

Results are in of the stellar occultation observation of object 2014 MU69, and astronomers think it may actually be a binary, rather that single piece of rock. 2014 MU69 is the Kuiper Belt Object (KBO) that the New Horizons spacecraft will visit in 2019.

New evidence suggests there may be more water hidden beneath the surface of the moon than previously thought.

Out There

Speaking of moons, a new paper analyzing the light curve data from Kepler of a distant star shows the possibility of a large planet with a large moon in orbit. Hubble is scheduled to do follow up observations in October to confirm the finding.

Weekly Links

Down to Earth

It was a busy two weeks since my last post, but the most important event for those of us in the ISS program was the safe return of two crew members from the ISS on June 2nd. France’s Thomas Pesquet and Russia’s Oleg Novitskiy undocked and landed on the same day, leaving Fyodor Yurchikhin, Peggy Whitson, and Jack Fischer aboard ISS.

Speaking of astronauts, NASA announced a new class of 12 astronaut candidates last week at an event at Johnson Space Center. Here is a link to their short bios, and the complete video of the event is below. Notably, the United States Vice President came to JSC for the event. Also, 3 of the candidates under thirty (the first time anyone of my generation has been selected) and one of the candidates is a former SpaceX employee.

Also speaking of astronauts, the astronaut office has a new chief astronaut. Patrick Forrester has replaced Chris Cassidy in the role. The change was made so that Cassidy can go back into flight rotation.

The enormous Stratolaunch aircraft – designed to air launch large orbital rockets – made a debut in Mojave, California when it was rolled out for a fueling test.

Also in Mojave, Virgin Galactic’s SpaceShipTwo conducted another glide test flight.

LEGO has released a $120 model kit of the Saturn V.

In Orbit

Five orbital rocket launches so far in June:

Up at the International Space Station, the station crew was busy with cargo transfer. First, the Cygnus vehicle, which had been docked for a month, departed and then two days later the SpaceX Dragon capsule was successfully captured by the robotic arm.

Around the Solar System

The Lunar Reconnaissance Orbiter was struck by a meteor. Remarkably, the results were captured in an image.

NASA has announced a solar investigation probe that will launch next year.

Weekly Links

Down to Earth

Virgin Galactic completed a successful glide flight of their latest SpaceShipTwo. The test included a test of the “feathering” system. The feathering system is what resulted in the loss of the first SpaceShipTwo during a powered ascent in 2014. This flight was an unpowered glide descent.

The air force’s secret space plane, the X-37B built by Boeing, landed after its 4th flight in space. The plane is small and unmanned, but is still impressive, flying and landing a lot like the Space Shuttle. This fourth mission spent an amazing 718 days in space.

The James Webb Space Telescope (JWST) – scheduled for launch next year – has been shipped from Goddard Spaceflight Center to Johnson Spaceflight Center for thermal vacuum testing.

In Orbit

Three successful orbital rocket launches since my last post (with another SpaceX Falcon 9 launch from Florida planned for tomorrow):

The video coverage of the SpaceX launch was some of their best ever, with video tracking of the rocket all the way from launch through stage separation and back to the recovery of the first stage booster on land. See below.

NASA astronauts Peggy Whitson and Jack Fischer completed a 4-hour spacewalk on Friday, May 12th, to do various ISS maintenance and upgrade tasks. The spacewalk was the 200th in support of ISS assembly and maintenance and put Whitson at 5th all time for spacewalking hours.

Around the Solar System

After Cassini’s first “deep dive” between Saturn and its rings (the first in a series as the mission ends), results show that this part of the area near Saturn is more dust-free than expected.

The Mars rover Curiosity is investigating sand dunes on Mars to learn more about local wind patterns in Gale Crater.

Weekly Links

Down to Earth

JAXA has included a replacement for their lost Hitomi X-Ray astronomy satellite in next year’s budget.

A new documentary about the early days of NASA Mission Control: The Unsung Heroes of Mission Control was released last week.

Marine, astronaut, and Senator John Glenn was laid to rest at the Arlington National Cemetery last week.

In Orbit

There have been only two orbital rocket launches since my last post on March 28th:

The first launch was a much-anticipated flight from SpaceX. The launch on March 30th was a relatively routine launch of a communications satellite to geosynchronous orbit. What made it unique was the the first stage of the Falcon 9 rocket had previously been flown before on a NASA cargo launch last spring. The launch was flawless, including recovery of the first stage booster on the droneship at sea, marking the first operational reuse of a rocket by a commercial company (components of the Space Shuttle system, such as the Orbiter and the SRBs, were frequently reflown).

The second launch was a Chinese Long March 3B rocket with a communications satellite aboard. This launch was mostly notable for this incredible video of the launch filmed from a dangerously close range:

Meanwhile, things have been very busy at the International Space Station. Astronauts Shane Kimbrough and Peggy Whitson conducted another spacewalk (designated US EVA 41) on March 30th. The pair of experienced spacewalkers managed to complete all planned tasks, including hooking up a new docking port at the front of the space station. However, the EVA was not without some excitement: one of four special thermal “shields” was accidentally dropped overboard and mission control teams had to come up with a plan to replace the shield in order to keep components of the ISS thermally protected.

Shortly after the spacewalk, Commander Shane Kimbrough handed the space station over the Whitson and then returned to Earth with the rest of his Soyuz crew, completing Expedition 50.

It was then announced that Peggy Whitson has agreed to stay onboard the ISS an extra 3 months and use a bonus empty seat on next week’s Soyuz mission to come home in September. Peggy will be the most experienced non-Russian astronaut in history when she comes home.

Around the Solar System

New results from the Cassini spacecraft, which orbits Saturn, have shown that the “plumes” coming from the ocean moon Enceladus’ subsurface seas contain molecular hydrogen, which could be used by microbial life to conduct methanogenesis (like the life living near Earth’s deep sea hydrothermal vents).

Measurements of elemental argon in Mars’ atmosphere by the MAVEN spacecraft have revealed that most of the planet’s atmosphere has been lost to space.

Weekly Links

Down to Earth

Check out this new video of Blue Origin’s orbital rocket concept, New Glenn.

If you like planetary science and are excited by the idea of future missions to Europa, you should read this detailed post at Ars Technica about how Congressman John Culbertson is working to make it happen.

SpaceX successfully conducted the static fire test for their next rocket launch from Pad 39A at the Kennedy Space Center. A Falcon 9 carrying a commercial satellite will liftoff very early Tuesday morning, March 14th.

In Orbit

Only one orbital rocket launch since my last post. A European Space Agency Vega rocket launched the Earth-observing Sentinel-2B satellite from French Guiana on March 7th.

As usual, there are lots of good pictures from the crew on the ISS to share. Here’s a selection.

https://twitter.com/Thom_astro/status/839769655971627008

https://twitter.com/Thom_astro/status/839831200780988418

Around the Solar System

New data from the Dawn probe in orbit of Ceres indicates that the “bright spots” are much younger than the craters they inhabit. This is evidence of relatively recent cryovulcanism.

Check out these incredible images of Saturn’s tiny moon Pan. It has a unique shape no one has ever seen before.

This is a pretty cool series of images showing a global dust storm moving across Mars.