Title
SAGE hydrocode simulation of an oblique asteroid/bolide impact and crater formation, temperature isosurface (tev_pn).
Specs
1280×720, 29.97 fps, 12.21 s, H.264 (Constrained Baseline), yuv420p, ~3959 kb/s, MP4. Audio effectively silent.
One-liner
A 3D scientific visualization (Los Alamos "SAGE Cx30e" hydrocode) of an oblique asteroid impact onto a flat planar target, in which an isosurface colored by temperature ("tev_pn", 0–0.5 eV) shows a hot crater bowl opening, a tall blue ejecta curtain/crown rising with an asymmetric downrange jet, and a complex crater with a raised rim maturing over a simulated clock from 2 to 118 seconds.
On-screen text (verbatim)
SAGE Cx30e, top-left, persistent
Top-right clock (seconds): 2.00s → 7 → 12 → 17 → 22 → 27 → 32 → 37 → 42 → 47 → 52 → 57.01 → 62.01 → 67.01 → 72 → 77 → 82.01 → 87 → 92.01 → 97 → 102 → 107.01 → 112 → 118.01s
tev_pn, colorbar label, bottom-right
Colorbar ticks (top→bottom): 0.5000 0.2812 0.1250 0.0312 0.0000
RGB axis triad, bottom-left
Timeline
2.00s Initial: large flat teal/dark-cyan target plane on black. A tiny rounded impactor blob near center, mostly blue (cool) with a thin red/yellow hot leading edge, just after first contact.
7.00s A roiling mostly red/orange (hot) mass of shocked/vaporized material erupts upward; a first low ejecta blanket spreads radially.
12–17s Ejecta plume grows tall and clearly asymmetric, hot red curtain on the near (uprange) side, filamentary multicolor ejecta streaming downrange (upper-right). Concentric surface ripples expand. Oblique impact confirmed.
22–32s Ejecta forms a fan/cone tilted downrange (hot orange/red outer skin, blue inner sheet); transient crater bowl deepens; multiple concentric wave rings.
37–47s Clear bowl-shaped transient crater (green/yellow rim, hotter interior); broad flaring curtain with a long downrange jet.
52–67s Crater matures: elliptical hot-red floor ringed by green/yellow walls; tall broad curtain with a perforated (lacy) blue upper sheet and an orange downrange ridge; raised rim begins.
72–87s Deep complex crater: bright red floor with concentric ring striations; asymmetric raised rim; large flaring blue ejecta crown; downrange jet still attached.
92–107s Crater broadens into a wide complex form: hot-red central floor, expanding raised hot rim/ejecta blanket (orange lobe downrange), blue collar around the rim.
112–118s Final mature complex crater: broad circular-to-elliptical excavation, glowing red striated floor, thick raised hot rim/ejecta blanket, residual ripple rings, remnant blue curtain standing behind with the persistent downrange strand.
Full description
A 3D scientific-visualization animation of a hypervelocity (asteroid/bolide) impact and crater-formation event, produced with the LANL SAGE Eulerian adaptive-mesh hydrocode. A persistent white serif label SAGE Cx30e (top-left) names the code and run; a top-right clock counts up in seconds (2.00s … 118.01s). The scene is a single shaded isosurface colored by a scalar labeled tev_pn via a bottom-right rainbow colorbar (blue→cyan→green→yellow→orange→red), ticks 0.0000–0.5000. tev denotes temperature in electron-volts, so the field is temperature 0–0.5 eV (≈ 0–5800 K; 1 eV ≈ 11,600 K). Blue is cold/ambient, red is the hottest (shock-heated, melted/vaporized) material; the _pn suffix likely tags a particular material/variable.
Initial state (2.00 s): a large flat horizontal target plane fills the lower frame as a uniform teal sheet in oblique perspective on black, viewed from an elevated three-quarter (bird's-eye oblique) angle. A small RGB axis triad sits lower-left; the camera is essentially fixed (perhaps a slight zoom mid-sequence) and does not orbit. A small impactor/shock bubble is already on the surface, blue with a thin hot red-yellow leading edge.
As the clock advances ~5 s/step, a roiling mass of shock-heated material (red/orange) erupts from the contact point and a thin cooler ejecta blanket (green/cyan/yellow) sprays radially, launching concentric surface ripples (propagating ground/shock waves). The ejecta plume is strongly asymmetric from early on, a hot uprange curtain rises steeply while a long filamentary jet streams downrange (upper-right). This asymmetry is the signature of an oblique impact (the bolide arrived at an angle), refining the earlier symmetric-vertical hypothesis. Through 12–47 s the ejecta organizes into a broad upward/outward-flaring curtain/crown: hot (orange/red) outer skin, blue/cyan tall interior sheets (expansion-cooled), with a lacy perforated texture as the thin sheet fragments. Beneath, a bowl-shaped transient crater deepens (green/yellow walls, progressively redder floor).
Late evolution (52–118 s): the transient crater matures into a complex crater. A bright red hot floor forms as a flat-to-elliptical disk decorated with prominent concentric ring striations. An asymmetric raised rim / ejecta blanket builds around the cavity, draping over the plane, hottest (orange/red) on the downrange side where most ejecta lands. The standing curtain becomes a wide low blue collar with a residual downrange strand at frame-right. By 118.01 s the result is a broad, mature, rimmed crater: glowing red striated floor, thick hot raised rim, surrounding ripple rings, remnant blue curtain.
Physically this is the cratering sequence of a large impact (the "Dino-Killer" filename alludes to a Chicxulub-scale, dinosaur-extinction-class bolide): contact-and-compression (instantaneous shock heating, hottest red material), excavation (ejecta curtain + transient cavity growth + concentric ripples), and modification (rim uplift forming the final complex crater). Temperature coloring makes shock-heated/melted/vaporized material glow red while bulk cold target and expansion-cooled ejecta read blue/teal. Flat planar geometry, a fixed oblique camera, the RGB triad, and HUD overlays are characteristic of a SAGE simulation rendered in EnSight/ParaView/VisIt.
