Automated Asteroid Alerts with NASA API, Slack & Google Calendar — n8n Workflow

Medium complexity Scheduled10 nodes🤗 Supportby Yusuke Yamamoto

Overview

This n8n template creates an automated alert system that checks NASA's data for near-Earth asteroids twice a day. When it finds asteroids meeting specific criteria, it sends a summary alert to Slack and creates individual events in Google Calendar for each object.

Use cases

Automated Monitoring**: Keep track of potentially hazardous asteroids without manually checking websites. Team or Community Alerts**: Automatically inform a team, a group of friends, or a community about significant celesti

Nodes used

SlackGoogle CalendarNASACode

Workflow Preview

NASA Asteroid Alert Workflow
This workflow automatically checks for near-Earth aster
Process:
1. Runs on a 12-h
⚙️ NASA API Configuration
Action Required: Replace the default `DEMO_KEY` with yo
1. Get a free key at: [api.nasa.gov](https://a
⚙️ Filtering Criteria
This node filters asteroids to find only significant on
Default (Test) Values:
- `MAX_DISTANCE_KM = 75000000000` (very far)
- `MIN
⚙️ Slack Configuration
Setup Required:
1. Select the 'Send Slack Alert' node.
2. Add your Slack OAuth2 credentials.
3. Choose the channel for alerts (e.g., `#asteroid-aler
Ensure the n8n
⚙️ Google Calendar Setup
This branch creates a calendar event for *each* asteroi
Setup Required:
1. Select the 'Create an event' node.
2. Add your Google Calendar OAuth2 credentials.
No Asteroids Branch
This is the 'false' branch of the IF node. It's trigger
The NoOp node does nothing, ending the workflow silentl
Idea:
S
Schedule Trigger
Calculate Date Range
Filter and Process Aster…
C
Check If Asteroids Found
Format Alert Messages
Send Slack Alert
S
Split Out Individual Ast…
Get an asteroid neo feed
Create an event
N
No Operation, do nothing
10 nodes9 edges

How it Works

  1. 1

    Trigger

    The workflow starts with a scheduled trigger, running on a defined schedule.

  2. 2

    Process

    Data flows through 10 nodes, connecting code, googlecalendar, if.

  3. 3

    Output

    The workflow completes its automation and delivers the result to the configured destination.

Node Details (10)

SL

Slack

slack

#1
GO

Google Calendar

googleCalendar

#2
NA

NASA

nasa

#3
CO

Code

code

#4

How to Import This Workflow

  1. 1Click Download JSON button on the right to save the workflow file.
  2. 2Open your n8n instance. Go to Workflows → New → Import from file.
  3. 3Select the downloaded automated-asteroid-alerts-with-nasa-api-slack-google-calendar file and click Import.
  4. 4Set up credentials for each service node (API keys, OAuth, etc.).
  5. 5Click Test Workflow to verify everything works, then activate it.

Or paste directly in n8n → Import from JSON:

{ "name": "Automated Asteroid Alerts with NASA API, Slack & Google Calendar", "nodes": [...], ...}

Integrations

codegooglecalendarifnasascheduletriggerslacksplitout

Get This Workflow

Download and import in one click

Download JSONView on n8n.io
Nodes10
Complexitymedium
Triggerscheduled
CategorySupport

Created by

Yusuke Yamamoto

Yusuke Yamamoto

@yusuke-yamamoto

Tags

codegooglecalendarifnasascheduletriggerslacksplitout

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