We describe Saturn's aurora as observed by HST in 10/1994, 10/1995, and 10-12/1997. HST provides access to the auroral emissions due to atomic and molecular hydrogen in the northern and southern auroral zones.

magnetospheres planets auroral↗

NASA NTRS2000

Vision of Nature's Planet Foundry: Images of Circumstellar Disks

As the number of detected extrasolar planetary systems has steadily grown over the past five years, so too has the number of circumstellar disks with resolved images.

astrophysics protoplanetary disks origin of the so↗

NASA NTRS2000

Hubble Space Telescope Imaging of the Environments of Young Binary Stars

Explore the source record for details and available documents.

Hubble Space Telescope Imaging Young Binary Stars↗

NASA NTRS2000

Hubble Space Telescope Imaging of the Environment of Young Binary Stars

Explore the source record for details and available documents.

astrophysics Hubble telescope binary stars circums↗

NASA NTRS1999

A Variable Asymmetry in the Circumstellar Disk of HH 30(sup 1)

We report Hubble Space Telescope observations of variability within the reflection nebulosity of HH 30, a compact bipolar nebula which is a nearly edge-on accretion disk system.

accretion disks circumstellar matter pre-main sequ↗

NASA NTRS1999

HST/NICMOS Imaging of Disks and Envelopes Around Very Young Stars

We present HST/NICMOS observations with ~ 0''.1 = 15 AU resolution of six young stellar objects in the Taurus star-formation region.

accretion disks circumstellar matter pre-main sequ↗

NASA NTRS1999

The Etched Hourglass Nebula MyCn18: II A Spatio-Kinematic Model

We have observed MyCn18, a young Planetary Nebulae with HST/WFPC2 and presented the observational results in an earlier paper. Here we present a detailed spatial/kinematical model of H alpha emission from the nebula.

MyCn18 planetary nebulae AGB stars circumstellar m↗

NASA NTRS1998

High-Resolution Optical and Near-Infrared Imaging of Young Circumstellar Disks

Explore the source record for details and available documents.

astrophysics star formation circumstellar matter↗

NASA NTRS1998

Asteroid Trails in Hubble Space Telescope WFPC2 Images: First Results

Careful examination of 28,460 selected Wide Field and Planetary Camera 2 (WFPC2) long exposures from 1994, 1995 and early 1996 has revealed trails of 96 distinct moving objects.

asteroids Hubble Space Telescope↗

NASA NTRS1997

HST Observations of the Disks and Jets of Taurus Young Stellar Objects

Explore the source record for details and available documents.

Taurus taurus young stellar objects↗

NASA NTRS1996

Vertical Structure of Neptune's Atmosphere

Explore the source record for details and available documents.

Hubble hubble space telecope wfpc2 wide-field plan↗

NASA NTRS1996

WFPC2 Studies of the Disk and Jet of HH 30

Hubble Space Telescope imaging of HH 30 has revealed this object to be a prototype young stellar object (YSO) accretion disk system. An optically thick circumstellar absorption disk, 450 AU in diameter, is seen extending perpendicular to highly collimated bipolar jets.

Hubble Space Telescope young stellar object Taurus↗

NASA NTRS1994

Hubble Space Telescope Wide Field Planetary Camera Observations of Neptune

The Hubble Space Telescope Wide Field Planetary Camera 2 was used to observe Neptune on 28-29 June 1994.

Neptune wide field planetary camera UV images meth↗