Photophoretic Tracers for Near-Space Remote Sensing at 30-100 km Altitudes | Simple Site

Benjamin SchaferRarified Technologies, Inc. We propose a new approach to atmospheric sensing at 30-100 km altitudes using photophoretically levitating tracers. These lightweight structures harness sunlight to remain suspended for up to months at controlled altitudes and can be remotely tracked by satellite-based lidar or radar. Unlike natural aerosols, these tracers are designed to provide strong and […]

Category: Space Technology Mission Directorate, NASA Innovative Advanced Concepts (NIAC) Program, NIAC Studies, Research and Technology Mission Directorate

Posted on July 21, 2026

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48

Climate Science

7

Space Communications & Navigation Program

45

Early Career Faculty (ECF)

10

Suomi NPP (Suomi National Polar-orbiting Partnership)

6

Michael S. Hopkins

1

NuSTAR (Nuclear Spectroscopic Telescope Array)

3

Flight Opportunities Program

23

Venus

12

Gravitational Microlensing

2

Ames Research Center

226

Biological & Physical Sciences

44

PREFIRE (Polar Radiant Energy in the Far-InfraRed Experiment)

8

Science-enabling Technology

50

Johnson Leadership

2

5

SERVIR (Regional Visualization and Monitoring System)

4

Cryosphere

8

STS-1

1

EPSCoR

3

Mars

110

NASA STEM Projects

9

Small Spacecraft Technology Program

20

Dawn

3

STS-51C

1

Mars Sample Return (MSR)

13

NEO Surveyor (Near-Earth Object Surveyor Space Telescope)

10

3

Transformational Tools Technologies

12

Global Precipitation Measurement (GPM)

2

XMM-Newton (X-ray Multi-Mirror Newton)

3

180

Astronomy

3

46

Robert L. Satcher Jr.

1

Investigation of Convective Updrafts (INCUS)

1

8

Commercial Space

98

32

Earth's Atmosphere

33

Sustainable Flight Demonstrator

6

Moons

4

Office of the Chief Health and Medical Officer (OCHMO)

5

Franklin R. Chang-Díaz

1

Visible / Optical Light

1

Helios 1

1

Apollo

14

BurstCube

4

Pulsars

13

23

Raja Chari

3

Hybrid Thermally Efficient Core

3

Landsat 1

1

1

2

Discovery Program

2

STS-96

1

Matthew Dominick

5

4

Extreme Weather Events

18

Underway Recovery Test 11

1

GRACE-FO (Gravity Recovery and Climate Experiment Follow-on)

7

7

B200

3

Planetary Nebulae

12

15

Jasmin Moghbeli

11

Lunar Surface Innovation Consortium

7

Coronal Diagnostic Experiment (CODEX)

3

Stars

155

Electrified Aircraft Propulsion

5

NASA Engineering and Safety Center

48

4

GALEX (Galaxy Evolution Explorer)

1

36

Apophis

2

Outer Planets & Ocean Worlds Program

1

ExoMoons

1

THEMIS-ARTEMIS (Time History of Events and Macroscale Interactions During Substorms - Acceleration, Reconnection, Turbulence and Electrodynamics of Moon's Interaction with the Sun)

1

Gemini IX

1

William A. Anders

2

Active Galaxies

13

Artemis Accords

48

Pathfinding for Airspace with Autonomous Vehicles

1

Research Opportunities in Space and Earth Sciences (ROSES)

4

In-Situ Resource Utilization (ISRU)

2

Leadership

12

Clouds

13

Space Communications Technology

21

Early Stage Innovations (ESI)

3

Super-Earth Exoplanets

10

Michoud Assembly Facility

35

Ocean Circulation

1

Flightlog

1

VERITAS (Venus Emissivity, Radio Science, InSAR, Topography & Spectroscopy)

3

Gravitational Waves

7

Ames Research Center's Science Directorate

34

Black History Month

7

Private Astronaut Missions

5

Scientific Balloons

17

Johnson Space Center

405

Magnetospheric Multiscale (MMS)

2

Seyfert Galaxies

4

CubeSat Launch Initiative

17

STS-107

2

ER-2

5

Mars 2020

35

NASA+

5

Carlos I. Noriega

1

SmallSats Program

5

DC-8

6

STS-51D

1

Mars Science Laboratory (MSL)

26

NEOWISE

8

54

Transformative Aeronautics Concepts Program

24

Globular Clusters

5

XRISM (X-Ray Imaging and Spectroscopy Mission)

6

Aeronautics Research

11

373

Physical Sciences

8

Robotics

18

Io

5

Low Boom Flight Demonstrator

27

Commercial Space Division

1

Spacesuits

8

Earth's Magnetic Field

5

Sustainable Flight National Partnership

4

MOSAICS

1

Office of the Chief Information Officer (OCIO)

4

Technology for Space Travel

18

Fruit Fly Lab (FFL)

1

Visible Infrared Imaging Radiometer Suite (VIIRS)

9

5

Apollo 1

1

Opportunities For U.S. Citizens to Get Involved

5

1

Quasars

6

Human Dimensions

19

Katherine Johnson IV and V Facility

3

Blog Posts

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August 6, 2026

Taking Flight to Prepare for Space

August 6, 2026

JOB OPPORTUNITIES: NASA OFFICE OF THE GENERAL COUNSEL

August 6, 2026

Newsletter Archive

May 2020

April 2020