# nasa.apod_range

**stable** **Advanced**

Astronomy Pictures of the Day for a date range.

`GET /v1/nasa/apod_range`

## What you get

A list of Nasa results in Onekey's unified shape, in `data` (an array). An empty array is a normal, successful answer and is charged like any other; a source that reports "nothing found" as an error returns a free `404 not_found` instead.

## What it costs

- **Advanced · 5 credits** for a fresh fetch, charged only when it succeeds.
- **Free when served from cache (0.2 credit for a cached response over 100 KB).**
- **Free** if the request is invalid (never charged) or the source fails or reports not found (refunded).

## Parameters

| Name | Type | Required | Default | What it is | Constraints |
| --- | --- | --- | --- | --- | --- |
| `start` | string | yes | (required) | Date YYYY-MM-DD | max 10 chars; must match `\d{4}-\d{2}-\d{2}`; trimmed |
| `end` | string | yes | (required) | Date YYYY-MM-DD | max 10 chars; must match `\d{4}-\d{2}-\d{2}`; trimmed |

## Request

```bash
curl "https://api.onekey.dev/v1/nasa/apod_range?start=2024-01-01&end=2024-01-05" \
  -H "x-api-key: YOUR_API_KEY"
```

```python
import requests

res = requests.get(
    "https://api.onekey.dev/v1/nasa/apod_range",
    params={"start": "2024-01-01", "end": "2024-01-05"},
    headers={"x-api-key": "YOUR_API_KEY"},
)
body = res.json()

if body["success"]:
    print(body["data"])
else:
    print(body["error"]["code"], body["error"]["message"])
```

```javascript
const params = new URLSearchParams({ start: "2024-01-01", end: "2024-01-05" });
const res = await fetch(`https://api.onekey.dev/v1/nasa/apod_range?${params}`, {
  headers: { "x-api-key": "YOUR_API_KEY" },
});
const body = await res.json();

if (body.success) console.log(body.data);
else console.error(body.error.code, body.error.message);
```

## Recorded response

A real Nasa response, recorded and returned in Onekey's shape. Fields the platform does not provide are `null`.

```json
{
  "success": true,
  "data": [
    {
      "content": {
        "title": "NGC 1232: A Grand Design Spiral Galaxy",
        "text": "Galaxies are fascinating not only for what is visible, but for what is invisible. Grand spiral galaxy NGC 1232, captured in detail by one of the Very Large Telescopes, is a good example.  The visible is dominated by millions of bright stars and dark dust, caught up in a gravitational swirl of spiral arms revolving about the center. Open clusters containing bright blue stars can be seen sprinkled a",
        "createdAt": "2024-01-01T00:00:00Z"
      },
      "media": {
        "url": "https://apod.nasa.gov/apod/image/2401/ngc1232b_vlt_960.jpg",
        "thumbnailUrl": null
      },
      "entity": {
        "url": "https://apod.nasa.gov/apod/image/2401/ngc1232b_vlt_3969.jpg",
        "category": "image"
      },
      "author": {
        "displayName": null
      }
    },
    {
      "content": {
        "title": "Rocket Transits Rippling Moon",
        "text": "Can a rocket make the Moon ripple? No, but it can make a background moon appear wavy.  The rocket, in this case, was a SpaceX Falcon Heavy that blasted off from NASA's Kennedy Space Center last week. In the featured launch picture, the rocket's exhaust plume glows beyond its projection onto the distant, rising, and nearly full moon.  Oddly, the Moon's lower edge shows unusual drip-like ripples. Th",
        "createdAt": "2024-01-02T00:00:00Z"
      },
      "media": {
        "url": "https://apod.nasa.gov/apod/image/2401/FalconMoon_Madow_960.jpg",
        "thumbnailUrl": null
      },
      "entity": {
        "url": "https://apod.nasa.gov/apod/image/2401/FalconMoon_Madow_1710.jpg",
        "category": "image"
      },
      "author": {
        "displayName": "Steven Madow"
      }
    }
  ],
  "metadata": {
    "platform": "nasa",
    "endpoint": "apod_range",
    "cached": false,
    "stale": false,
    "age_s": 0,
    "fetched_at": "2026-01-01T12:00:00+00:00",
    "credits_charged": 5,
    "request_id": "7f3a9c2e5b1d4c8fa2e6d0b9c4f18e37"
  },
  "error": null
}
```

## Field mapping

How this endpoint's source fields become Onekey's [unified schema](https://onekey.dev/docs/schema.md). Fields the source lacks come back as `null`.

| Source path | Onekey field | Transform |
| --- | --- | --- |
| `title` | `content.title` | - |
| `explanation` | `content.text` | - |
| `url` | `media.url` | `safeUrl` |
| `hdurl` | `entity.url` | `safeUrl` |
| `media_type` | `entity.category` | - |
| `date` | `content.createdAt` | `toIsoDate` |
| `copyright` | `author.displayName` | - |
| `thumbnail_url` | `media.thumbnailUrl` | `safeUrl` |

## Caching and freshness

- Fresh for about 1 hour. Repeat calls in that window are served from cache and are free.
- Between 1 hour and 1 day the cached copy is still served instantly and marked `stale: true` while Onekey refreshes it in the background.
- If the source is down when a refresh is needed, the last copy can be served for up to 1 day more (marked stale).
- A "not found" is remembered for 5 minutes and is free.
- The cache is shared across all customers, which is what keeps repeat calls cheap.

## What can go wrong

| Status | Code | What to do |
| --- | --- | --- |
| 401 | `unauthorized` | Check the `x-api-key` header. |
| 402 | `insufficient_credits` | [Add credits](https://onekey.dev/pricing); your balance must cover the price. |
| 404 | `not_found` | Unknown endpoint path. |
| 422 | `invalid_params` | Fix the parameters using the table above. Free. |
| 429 | `rate_limited` | Wait `Retry-After` seconds, then retry. |
| 502 | `upstream_error` | The source failed. Refunded; retry with backoff. |

See [Errors](https://onekey.dev/docs/errors.md) for the full list and retry guidance.

Status: stable (verified against the live source).