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James Webb Cake Telescope

Sweet Update on the James Webb Space Telescope

  • By Maggie Masetti
  • April 21, 2016
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We gave you all an update on the progress of the James Webb Space Telescope mirror assembly not long ago. But there have also been exciting updates on JWST’s flight instruments as well. They just haven’t been as easily visible, because the excitement was happening deep in belly of NASA … Continue Reading →


CGRO being deployed via space shuttle

Looking Back: The Legacy of the Compton Gamma Ray Observatory

  • By Maggie Masetti
  • April 13, 2016
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There are great observatories – and then there are “Great Observatories,” a title given to four space telescopes launched in the 1990s/early 2000s, each studying a different wavelength of light. The Hubble Space Telescope, primarily looking at visible light, you are likely familiar with; it was the first launched and … Continue Reading →


24877166436_22dfbb89fe

Mirror, Mirror

When last I updated, the James Webb Space Telescope’s primary mirror was under construction here at NASA Goddard. I believe we were on mirror segment number five. I’m very pleased to say that the primary mirror assembly was officially completed on February 3, 2016! Here are a few more photos … Continue Reading →


The heart of the ASTRO-H Soft X-ray Spectrometer is the microcalorimeter array at center. The five-millimeter square forms a 36-pixel array. Each pixel is 0.824 millimeter on a side, or about the width of the ball in a ballpoint pen. The detector's field of view is approximately three arcminutes, or one-tenth the apparent diameter of the full moon.

Credit: NASA's Goddard Space Flight Center

Five Questions about ASTRO-H/Hitomi (and launch videos!)

  • By Maggie Masetti
  • February 22, 2016
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We were able to get our hands on these “5 questions your neighbor might ask” about the ASTRO-H mission (recently renamed Hitomi), and in particular NASA Goddard’s contributions. Here are the answers, courtesy of Dr. Rich Kelly, the Principal Investigator of the Soft X-ray Spectrometer (SXS). [Fun fact – he … Continue Reading →


ASTRO-H Launches

A New Eye in Space

It’s with greatest pleasure that we say congratulations to the whole ASTRO-H team for a successful launch. Or should we say, the Hitomi team. ASTRO-H has been newly re-christened, as is the Japanese tradition upon a successful launch. The name Hitomi has a significance, and that is this. According to … Continue Reading →


ASTRO-H Artist Impression

Almost time…

Update, Feb 16: We have an official updated launch date! It’ll be 3:45 AM EST February 17th (that is Tuesday into early Wednesday morning). The time is almost here to see the ASTRO-H spacecraft launch, and to learn what its true name will be. The Japanese space agency has a … Continue Reading →


John Mather

A Conversation with John Mather

You might recall our recent interns from Germany, Daniela and Verena, who guest blogged for us a few times. They did some interviews with people working on the James Webb Space Telescope while they were here and we thought we would share this one with Nobel Laureate and James Webb … Continue Reading →


Mirror Scoreboard

Assembling a Space Mirror

I have been remiss in not blogging about this sooner – but it’s been incredibly busy around here at “JWST Central.” That is to say, we’ve been hard at work, here at NASA Goddard putting together the actual James Webb Space Telescope. Back in August, we had the giant telescope … Continue Reading →


Figure 7

SpaceCrafts: Making a Hubble Space Telescope Costume

  • By Maggie Masetti
  • November 30, 2015
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You may have seen our recent blog post by a high school friend of Maggie’s who helped her son make a James Webb Space Telescope costume for Halloween this year. When the Schoellners put together a Hubble costume, we had to ask them for a “how to” – so now … Continue Reading →


Robert H. Goddard and Liquid-Fueled Rocket

Following Goddard’s Tracks

Here is another guest blog from Daniela and Verena, German interns from Airbus. You can read their intro post here. You’ll find the blog first in English and then in German. Enjoy! After spending our first week at NASA Goddard, we went on our first “spacewalk.” Our mission: the discovery … Continue Reading →


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