diff --git a/journal/notes_module_4.md b/journal/notes_module_4.md
new file mode 100644
index 0000000000000000000000000000000000000000..50faadf945b1024a5b59468c8c41ffe90d7d475d
--- /dev/null
+++ b/journal/notes_module_4.md
@@ -0,0 +1,4 @@
+# Module 4
+
+- zenodo, too good to be true ?
+- FITS, HDF5 to handle binary files
\ No newline at end of file