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Explorers and Heliophysics Projects Division (EHPD)

The Explorers and Heliophysics Projects Division (EHPD) consists of three programs: Explorers, Living With a Star (LWS), and Solar Terrestrial Probes (STP). The Explorers Program is an uncoupled Program which provides frequent flight opportunities for world-class scientific investigations from space within NASA Heliophysics and Astrophysics Space Science goals. Explorers projects are typically implemented in the Principal Investigator (PI) mode. The LWS Program is a loosely coupled Program which provides missions to improve our understanding of how and why the Sun varies, how the Earth and Solar System respond, and how the variability and response affects humanity in Space and on Earth. The STP Program is an uncoupled Program which provides missions to understand the fundamental physics processes from the Sun to Earth, to outer planets, and beyond to the interstellar medium.

>> Read about Explorers
>> Read about Living With a Star
>> Read about Solar Terrestrial Probes

NASA Goddard Provides Superfast Sensors for New MMS Mission

NASA Goddard Provides Superfast Sensors for New MMS Mission

03.11.15 – Scheduled to lift off on March 12, 2015, NASA's new Magnetospheric Multiscale, or MMS, mission consists of four identical spacecraft that each carry 25 sensors with unprecedented observational speeds. All that power will be essential to gather the first ever, three-dimensional measurements of a little understood phenomena in space called magnetic reconnection. Magnetic reconnection happens when magnetic field lines realign quickly and explosively, initiating the movement of large-scale flows of particles, and accelerating particles up to nearly the speed of light. This is one of the most dramatic occurrences in space, powering gigantic explosions on our closest star such as solar flares, and causing particles to funnel into near-Earth space leading to aurora.

>> Read More

More EHPD News

03.10.15Studying Magnetic Reconnection Near Earth
02.25.15Pre-Launch Briefing for the MMS Mission
02.19.15New NASA Movie on the MMS Mission
02.19.15NASA, ESA Telescopes Give Shape to Furious Black Hole Winds
02.11.15New Videos Highlight NASA SDO's Fifth Anniversary
02.10.15NASA's SDO Sees Giant Filament on the Sun
01.22.15SOHO and Hinode Offer New Insight Into Solar Eruptions
01.16.15NuSTAR Principal Investigator Receives Astrophysics Prize
01.15.15NEOWISE: A Yearlong Look at the Sky
01.13.15First Notable Solar Flare of 2015

>> Go to Newsroom

Explorers 4 New Missions

NASA Selects Explorer Projects To Probe Earth's Upper Atmosphere
News Release 04.12.13 – NASA has selected a new satellite mission and a new space-based instrument to begin development as part of the agency's Heliophysics Explorer Program.
>> Find more on ICON

NASA Selects Explorer Investigations for Formulation
News Release 04.05.13 – NASA's Astrophysics Explorer Program has selected two missions for launch in 2017: a planet-hunting satellite and an International Space Station instrument to observe X-rays from stars.

NASA Taps the Power of Zombie Stars in Two-in-One Instrument 04.05.13 – NICER will not only reveal why neutron stars are the densest objects in nature, but also demonstrate navigation technology that could revolutionize…
>> Find more on NICER


ehpd organization chart image used to link to all organization charts
Organization charts for the Explorers & Heliophysics Projects Division

Updated 01.17.13
>> Org Charts

The Explorers and Heliophysics Projects Division mission to support Heliophysics, Physics and Astronomy

Missions Status

Explorers Missions

  • Astro-H
    Launch Date: November 2015
    Phase C/D: Design & Development
  • GOLD
    Launch Date: 2017
    Phase B: Preliminary Design & Technology Development
  • ICON
    Launch Date: February 2017
    Phase B: Preliminary Design & Technology Development
    Launch Date: August 2016
    Phase B: Preliminary Design & Technology Development
  • TESS
    Launch Date: August 2017
    Phase B: Preliminary Design & Technology Development
  • For all Explorers Missions

Living With a Star Missions

Solar Terrestrial Probes Mission

Planetary Missions

NET = No Earlier Than

Related Sites

Internal Sites

Connect with
Explorers Missions

IRIS — Operating
Check out IRIS on Facebook        
NuSTAR — Operating
Check out NuSTAR on Facebook Follow NuSTAR on Twitter      
TESS — Development
Check out TESS on Facebook Check out TESS on Google+ Follow TESS @ NASA on Twitter Follow TESS @ MIT on Twitter  
WISE — Operating
Check out WISE on Facebook Follow WISE on Twitter      

Connect with LWS

SDO — Operating
Check out SDO on Facebook Follow SDO on Twitter Check out SDO on YouTube Check out SDO on Flickr Check out SDO's Blog
Van Allen Probes — Operating
Check out Van Allen Probes on Facebook Follow Van Allen Probes on Twitter Check out Van Allen Probes on YouTube    

Connect with STP

HINODE — Operating
Check out HINODE on Youtube with NASA Check out SDO on Flickr      
MMS — Operating
Check out MMS on Facebook Follow MMS on Twitter Check out MMS on YouTube Check out MMS on Flickr Follow MMS on Pinterest
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