SLAC Today is available online at:
http://today.slac.stanford.edu
In this issue:
NASA Restarts Telescope Mission to Detect Black Holes
Safety Today: A Hot Topic
Hugh Harris and Jessica Vey Receive SSRL Awards
Word of the Week: Klystron
Tuesday - October 2, 2007 |
NASA Restarts Telescope Mission to Detect Black HolesNASA has decided to restart an astronomy mission that will have greater capability than any existing instrument for detecting black holes in the local universe. The Nuclear Spectroscopic Telescope Array, or NuSTAR, is a telescope capable of imaging celestial X-rays in the range of 10 - 80 keV, known as the "hard" X-ray band. Data from NuSTAR will expand our understanding of the origins and destinies of stars and galaxies. NASA had stopped the study effort on the NuSTAR mission in 2006 due to funding pressures within the Science Mission Directorate. "We are very excited to be able restart the NuSTAR mission," said Alan Stern, associate administrator for the Science Mission Directorate at NASA Headquarters in Washington. "NuSTAR has more than 500 times the sensitivity of previous instruments that detect black holes. It's a great opportunity for us to explore an important astronomical frontier. We are getting more and more from the science budget we have, and the restart of the highly-valued NuSTAR mission is an example of that." SLAC's main role in NuSTAR is scientific guidance and collaboration on the interpretation and analysis of data, but is likely to involve instrument calibration. "Those of us working on this project had not lost hope for this really wonderful mission," said Kavli Institute for Particle Astrophysics and Cosmology (KIPAC) researcher Greg Madejski, a NuSTAR co-investigator who has been working on the mission since its infancy stages. "Due to the merits of this mission, it is back up and running." Read more... |
||
A Hot TopicEven though cooler weather is quickly approaching, a few very warm days still remain ahead. Keeping cool while working in the heat requires taking special precaution to prevent heat stress illness. Heat stroke is the most serious stage of overheating and can be deadlyplease don't hesitate to call 9-911 if you or someone you know might be experiencing a heat stroke. Risk factors for heat stress illness include elevated air temperature or humidity; exposure to the sun or other sources of radiant heat; conductive heat sources; intensity of work; and amount of both general and protective clothing. Be vigilant in extreme or unusual temperatures, working inside buildings, vaults, tunnels, or other areas that contain heat sources or have restricted airflow. At temperatures of only 80 degrees Fahrenheit (27 degrees Celsius) and more than 50% relative humidity, there is some risk of heat illness; that risk increases as both the temperature and humidity increase.
The following steps can help lower the risk of heat stress illness: A quick reference card is available on the Occupational Safety and Health Administration's website. Be Cool! Be Safe! |
Word of the Week:
|
Events (see all | submit)
Access (see all)
Announcements
|
| ||
<%
Response.AddHeader "Last-modified", getArticleDate()
'Response.AddHeader "Last-modified","Mon, 01 Sep 1997 01:03:33 GMT"
'Monday, December 06, 2010
%> View online at http://today.slac.stanford.edu/ |