Latest Space News
Sat, 24 Mar 2018 00:50:37 +0000
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Fri, 23 Mar 2018 20:48:01 +0000
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Thu, 22 Mar 2018 21:34:25 +0000
The House Science Committee favorably reported bills March 22 that would recognize a NASA center as a center of excellence in rocket propulsion and would resolve a commercial space regulatory issue.
Thu, 22 Mar 2018 18:39:52 +0000
The 2018 defense appropriation may be the one and only chance for Congress to add $600 million for two new satellites given how large of an increase the Pentagon is getting — $61 billion more than last year’s funding.
Thu, 22 Mar 2018 17:28:33 +0000
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Thu, 22 Mar 2018 17:09:09 +0000
A final fiscal year 2018 omnibus spending bill released March 21 fully funds two key weather satellite programs at NOAA while increasing funding for future weather satellites and space weather efforts.
Thu, 22 Mar 2018 07:00:22 +0000
A final fiscal year 2018 spending bill released by House and Senate appropriators March 21 would give NASA more than $20.7 billion, far above the administration’s original request.
Wed, 21 Mar 2018 22:31:04 +0000
The Air Force's share of the Defense Department's $12.5 billion national security space budget is $11.4 billion.
Wed, 21 Mar 2018 22:03:48 +0000
A Belgian court reversed approval for Inmarsat’s European Aviation Network in the country after fleet operator Viasat challenged the legality of its authorization.
Wed, 21 Mar 2018 19:55:11 +0000
The European Space Agency is revising its e.Deorbit program to look for synergies between the mission and satellite servicing vehicles.
Wed, 21 Mar 2018 19:32:51 +0000
Congress expects to receive from Hyten in June a “warfighting concept of operations” for space. One of the topics will be how to prepare the military for space operations.
Wed, 21 Mar 2018 16:06:41 +0000
Relativity, the startup company developing small launch vehicles using additive manufacturing technologies, announced March 21 an agreement with NASA’s Stennis Space Center to take over one of its test stands.
Wed, 21 Mar 2018 13:20:38 +0000
President Trump's riff on creating a military space force captured the public’s imagination, spawning memes and jokes about starship ninjas gearing up to fight the nation’s wars in space.
Wed, 21 Mar 2018 11:05:37 +0000
The Japanese government, working with private ventures, announced plans March 20 to establish a nearly billion-dollar fund to support the development of space startups in the country.
Wed, 21 Mar 2018 01:24:13 +0000
An Alaskan spaceport will host the first launch of a rocket developed by a stealthy startup company as soon as next week, spaceport officials confirmed March 20.
Tue, 20 Mar 2018 20:40:50 +0000
A decision on a new launch date for NASA’s James Webb Space Telescope, and announcement of any potential breach of its $8 billion cost cap, could come next week, an agency official said March 20.
Tue, 20 Mar 2018 18:20:11 +0000
A letter signed by more than 60 House members calls on the Senate to advance the stalled nomination of fellow congressman Jim Bridenstine to be NASA administrator.
Tue, 20 Mar 2018 17:29:38 +0000
Citing recent reforms that provide more time to orbit a new satellite constellation, satellite broadband-startup OneWeb asked U.S. telecom regulators to nearly triple the size of its authorized low-Earth-orbit constellation.
Tue, 20 Mar 2018 10:53:36 +0000
Citing progress in producing plutonium-238, NASA will allow scientists proposing missions for an upcoming planetary science competition to use nuclear power sources.
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    Personal information
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    Candidate Profile
     Date Submitted:16-06-2015
     Last Modified:16-06-2015 (07:27)
    Job information
     Current job:Physics & Astronomy PhD
     Employment Term:Temp/Contract
     Job location:Anywhere
     Date available:immediately
     Industry:Civil Agencies/International Organizations, Satellite Manufacturers and Subcontractors, Satellite Operators, , , Launch Systems, Consulting/Engineering Services
     KeywordsSoftware development, data analysis, physics, Python, C++, C

    Scientist with experience in software development looking for a technical challenge


    March 2 2015 Ph.D. in Science (Physics & Astronomy) Radboud University Nijmegen

    Thesis: “Measuring radio emission from air showers with LOFAR”. Wrote a pipeline to identify and calibrate nanosecond timescale radio pulses in data from the worlds largest low frequency radio telescope. Performed statistical analysis on the resulting dataset to characterize the radio emission. Contributed to the achievement of a major breakthrough in the field: the first high-precision radio measurement of the air shower maximum. Found a link between cosmic ray radio emission and thunderstorms opening up a new field of interdisciplinary research.

    May 27 2010 Master Physics & Astronomy (cum laude) Radboud University Nijmegen

    Thesis: “V348 Puppis”. Used non-equidistant sampling period analysis and Doppler mapping techniques on time resolved spectroscopic observations of a cataclysmic variable. Followed elective courses on numerical methods (integration, optimization, Monte Carlo simulations and neural networks) in addition to advanced courses on physics.

    August 31 2007 Bachelor Physics & Astronomy Radboud University Nijmegen

    Thesis: “LORUN - A radio telescope for the detection of cosmic rays”. Installed a prototype radio detector and wrote analysis software in C++ and Matlab/Octave.



    5+ years of experience with C, C++ and Python. Designed and implemented a pipeline in Python and C++, with OpenMP for parallel programming, to process many terabytes of timeseries data. Implemented an SQL database (PostgreSQL) backend and a web frontend for said pipeline. Wrote a C library with Python bindings for very fast coordinate matching of astronomical catalogs. Developed a real-time backend for a radio telescope, accepting data over a TCP or UDP socket and correlating it on the GPU using CUDA. Additional experience with many other programming languages.

    For some examples of code I have written, see my github repository at:

    Linux / UNIX

    15+ years of experience with OSX and Linux on both desktops and servers. Managed the purchase, configuration, installation and operation of a still growing 45 node Linux based computer cluster with 0.5 PB of storage to handle all computational needs of the Nijmegen Astrophysics department.

    Communication, collaboration and presentation

    Experience with collaborative (open source) development. Contributed the lombscargle routine to SciPy and the cubehelix colormap to matplotlib. Taught several short courses on Python for scientists and wrote an introductory tutorial on the topic that is now used by many people in multiple universities. Presented talks at international and national conferences, seminars and workgroup meetings. Published multiple papers in high-impact peer reviewed journals (3 first author, 10+ co-author, several more in preparation).

    Languages: Dutch (native), English (full professional proficiency), German (limited working proficiency).

    Work experience

    August 2009 -
    February 2010 Software developer South African Astronomical Observatory

    Implemented part of the data reduction pipeline for the slot mode of the SALTICAM photometer and the Berkeley Visible Imaging Tube instruments of the Southern African Large Telescope. Using Python, C, FORTRAN, IRAF/PyRAF and Qt.

    July 2008 -
    April 2009 Student Assistant Radboud University Nijmegen

    Developed data acquisition and analysis software for a two-element radio interferometer in C, Python and LabView. Assisted in teaching a course on Radio Astronomy for freshmen and co-wrote the lecture notes for this course. Taught an introductory practicum on Radio Astronomy with distributed antenna arrays.

    Selected Publications

    • Probing Atmospheric Electric Fields in Thunderstorms through Radio Emission from Cosmic-Ray-Induced Air Showers, Schellart, P., Trinh, T. N. G., et al., LOFAR Collaboration, 2015, Physical Review Letters, 114, 16
    • Measuring a Cherenkov ring in the radio emission from air showers at 110-190 MHz with LOFAR, Nelles, A., Schellart, P., et al., LOFAR Collaboration, 2015, Astroparticle Physics, 65, 11
    • The shape of the radio wavefront of extensive air showers as measured with LOFAR, Corstanje, A., Schellart, P., et al., LOFAR Collaboration, 2015, Astroparticle Physics, 61, 22
    • Polarized radio emission from extensive air showers measured with LOFAR, Schellart, P. et al., LOFAR Key Science Project Cosmic Rays, 2014, Journal of Cosmology and Astroparticle Physics, 10, 14
    • Detecting cosmic rays with the LOFAR radio telescope, Schellart, P., Nelles, A., et al., LOFAR Collaboration, 2013, Astronomy and Astrophysics, 560, A98
    • LOFAR: The Low-Frequency Array, van Haarlem, M. P. et al., LOFAR Collaboration, 2013, Astronomy and Astrophysics, 556, A2
    • Radio galaxies of the local universe. All-sky catalog, luminosity functions, and clustering, van Velzen, S., Falcke, H., Schellart, P., Nierstenhöffer, N., & Kampert, K.-H., 2012, Astronomy and Astrophysics, 544, A18

    Full list of publications available online or upon request.

    Personal Note

    Outside of work I enjoy traveling & nature, seeing the world, meeting old friends and making new ones. In rock climbing and bouldering, both indoor and outdoor, is where I find the perfect combination of challenging myself and working together to solve problems.

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