From Hubblesite: Hubble’s infrared vision pierced the dusty heart of our Milky Way galaxy to reveal more than half a million stars at its core. Except for a few blue, foreground stars, the stars are part of the Milky Way’s nuclear star cluster, the most massive and densest stellar cluster in our galaxy. Located 27,000 light-years away, this region is so packed with stars, it is equivalent to having a million suns crammed into the volume of space between us and our closest stellar neighbor, Alpha Centauri, 4.3 light-years away. At the very hub of our galaxy, this star cluster surrounds the Milky Way’s central supermassive black hole, which is about 4 million times the mass of our sun.
We are looking towards the center of our own galaxy. The center is around 27,000 light-years away and an incredible number of stars can be seen in this wonderful Hubble image taken in the infrared.
This infrared image from the NASA/ESA Hubble Space Telescope shows the centre of the Milky Way, 27 000 light-years away from Earth. Using the infrared capabilities of Hubble, astronomers were able to peer through the dust which normally obscures the view of this interesting region. At the centre of this nuclear star cluster – and also in the centre of this image – the Milky Way’s supermassive black hole is located.
Here’s a “selfie” of the little rover Opportunity and dust streaks on the solar panels. Solar panels which are otherwise remarkably clean. This rover, Opportunity has set the bar to which all future rovers will be compared at least in terms of longevity. Opportunity has been on Mars over 4300 Sols and traveled more than 42 km / 26 miles.
Make me wonder what Oppy’s twin Spirit looks like. Of course Spirit stopped functioning in 2010 after over 2500 Sols and a very successful mission. Perhaps the MRO can capture a picture of it down the road.
Here’s what NASA says about the image: This image from the navigation camera on the mast of NASA’s Mars Exploration Rover Opportunity shows streaks of dust or sand on the vehicle’s rear solar panel after a series of drives during which the rover was pointed steeply uphill.
The image was taken on March 21, 2016, during the 4,322nd Martian day, or sol, of Opportunity’s work on Mars. The rover’s location was on the north-facing slope of “Knudsen Ridge,” which forms part of the southern edge of “Marathon Valley.” During a forward, uphill drive on March 10 (Sol 4311), Opportunity’s tilt reached 32 degrees, the steepest ever for any rover on Mars. While the rover was so steeply tilted, accumulated dust on its deck was affected by vibrations from wheels slipping against the ground. Tilt in the same direction continued with two downhill drives in reverse between that ascent and when this images was taken.
Update: As of 21:45 UTC the odds of having conditions favorable for launch is 90 percent.
Check back for link for live coverage at 02:00 UTC 23 March 2016.
The window opens tomorrow for another launch. This launch will be the fifth resupply mission to the International Space Station for Orbital’s Cygnus cargo ship. The image shows the Cygnus encapsulated for flight at Launch Complex 41 at the Kennedy Space Center.
The Cygnus will be launched atop a United Launch Alliance Atlas V rocket at 11:05 p.m. EDT tomorrow – that is 03:05 UTC.
Cygnus will carry almost 7,500 pounds of science and research, crew supplies and vehicle hardware to the orbital laboratory to support dozens of science and research investigations that will occur during Expeditions 47 and 48.
The new experiments will inspire future scientists and explorers, with experiments such as an investigation that looks at the properties and behavior of regolith, or “soil” found on asteroids, comets, the moon, and other airless worlds; an instrument for the first-ever, space-based observations of the chemical composition of meteors entering Earth’s atmosphere; a technology demonstration of an adhesive device that can stick on-command in the harsh environment of space; and, the second generation of a portable onboard 3-D printer, among others.
In the event the launch does not take place as scheduled for whatever reason, the next window is 23 March at 09:45 EDT (01:45 UTC on 24 March).
Scott Kelly turns “the keys” to Tom Kopra. Kopra will assume the role of Station Commander when on the ISS Scott Kelly and Mikhail Kornienko and Sergey Volkov undocks from the space station on March 1. Both Kelly and Kornienko have spent an entire year and Volkov 340 days on the ISS.
Congratulations and welcome home!
Here’s a run down of the activities for later today:
Tuesday, March 1
4:15 p.m. — Farewell and hatch closure coverage; hatch closure scheduled at 4:40 p.m. (21:40 UTC)
7:45 p.m. — Undocking coverage; undocking scheduled at 8:05 p.m. (01:05 UTC 02 March)
10:15 p.m. — Deorbit burn and landing coverage; deorbit burn scheduled at 10:32 p.m., with landing at 11:25 p.m. (10:25 a.m. on March 2, Kazakhstan time) (04:25 UTC)
This image of “Rosetta’s Comet” by Paolo Bacci from San Marcello Pistoiese gives us a nice perspective on Comet 67P/Churyumov-Gerasimenko. It’s almost hard to believe it is the same comet as we see below from Rosetta’s NAVCAM.
Credits: ESA/Rosetta/NAVCAM – CC BY-SA IGO 3.0
Hat tip: Epic Cosmos
Here is a composite image showing the size and location of the Smith Cloud on the sky, note the scale size of the full moon. The cloud appears in false-color in this image as observed by the Green Bank Telescope in West Virginia. While the cloud was observed in radio wavelengths, the visible-light image of the background star field shows the cloud’s location in the direction of the constellation Aquila.
Though hundreds of enormous, high-velocity gas clouds whiz around the outskirts of our galaxy, this so-called “Smith Cloud” is unique because its trajectory is well known. New Hubble observations suggest it was launched from the outer regions of the galactic disk, around 70 million years ago. The cloud was discovered in the early 1960s by doctoral astronomy student Gail Smith, who detected the radio waves emitted by its hydrogen.
The cloud is on a return collision course and is expected to plow into the Milky Way’s disk in about 30 million years. When it does, astronomers believe it will ignite a spectacular burst of star formation, perhaps providing enough gas to make 2 million suns.
Expedition 46 Commander Scott Kelly of NASA and Flight Engineer Mikhail Kornienko of Roscosmos will be ending a year-long mission aboard the ISS.
How they adapted to the weightless environment after a the year in space will be of great interest as well as how they re-adjust to gravity. The findings will assist with any future long duration missions, say to Mars.